List of the Cenozoic life of Wyoming

This list of the Cenozoic life of Wyoming contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wyoming and are between 66 million and 10,000 years of age.

A[]

• †
  • †
• †
  • †
  • † – type locality for species
  • † – type locality for species
• †Abuta – or unidentified related form
  • † informal
• †Acacia
  • †
  • †
  • †
• †
  • † – type locality for species
• Accipiter
  • 

    A living Accipiter gentilis, or northern goshawk
    †Accipiter gentilis
  • †Accipiter striatus
• Acer
  • † informal
  • † informal
  • †
  • †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †Achaenodon
  • † – type locality for species
  • † – type locality for species
• †Acidomomys – type locality for genus
  • † – type locality for species
• †
  • †
• †Acocephalus
  • † – type locality for species
• †
  • †
  • †
  • †
  • †
• 

  Living Acrostichum, or leather ferns
  †Acrostichum
  • †
• †Adilophontes – type locality for genus
  • † – type locality for species
• †
  • † – tentative report
  • † – or unidentified comparable form
  • †
• †Adocus
• †
  • †
  • †
  • †
• Aegialia
  • † – type locality for species
• Aegolius
  • †Aegolius acadicus
  • †Aegolius funereus
• 

  Life restoration of the Miocene camel Aepycamelus, or the long-necked camel. Heinrich Harder (1920).
  †Aepycamelus
• † – type locality for genus
  • † – type locality for species
• †Aesculus
  • †
  • †
• †Afairiguana – type locality for genus
  • †Afairiguana avius – type locality for species
• †
  • †
• †
  • †
• Agelaius
  • †Agelaius phoeniceus
• †Agnotocastor
  • †Agnotocastor galushai – type locality for species
• 

  Life restoration of the Eocene-Oligocene even-toed ungulate Agriochoerus
  †Agriochoerus
  • †
  • † – or unidentified comparable form
• †Ailanthus
  • †
• †
  • † – type locality for species
• †Alastor
  • † – type locality for species
• † – or unidentified comparable form
  • †
• Alces
  • †Alces alces
• †Alchornea – or unidentified related form
  • † informal
• †Aletodon
  • † – type locality for species
  • † – type locality for species
  • †
• 

  Restorative model of the Miocene deer relative Aletomeryx
  †Aletomeryx
  • †Aletomeryx gracilis
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• Aleurites
  • †
• †
  • †
• †
  • †
  • † informal
• †
  • †
• 

  Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus
  †Allognathosuchus
  • †
  • †Allognathosuchus polyodon
  • †Allognathosuchus wartheni – type locality for species
• †
  • †
• †Allophylus
  • †
• Alnus
  • † informal
  • † informal
  • † informal
• †
  • †
• †
  • †
• †
  • †
• †
  • † – type locality for species
• †
  • † – type locality for species
• †
  • †
  • † – or unidentified comparable form
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• 

  Fossilized needles of an Amentotaxus, or catkin-yew
  †Amentotaxus
  • †
• Amia
  • †
• †Amitabha – type locality for genus
  • †Amitabha urbsinterdictensis – type locality for species
• †Ampelopsis
  • †
• †Amphechinus
  • † – type locality for species
• †
  • †
• †
• †
• Amphiuma
  • † – type locality for species
• †
  • † – type locality for species
• 

  Assemblage of fossilized skeletons of the softshell turtle Amyda
  Amyda
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • †
• – tentative report
• †
  • † – type locality for species
  • †
• †Anamirta – or unidentified comparable form
  • †
• †
  • † – type locality for species
  • † – type locality for species
• Anas
  • †Anas acuta
  • 

    A living Spatula clypeata, or northern shoveler
    †Anas clypeata
  • †Anas crecca
  • †Anas platyrhynchos
  • † – type locality for species
• †Anatella
  • † – type locality for species
• †Anconodon
  • †
  • †
• †Anemia
  • †
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • †
  • † – type locality for species
• †
  • † – or unidentified comparable form
• †Anniealexandria – type locality for genus
  • †Anniealexandria gansi – type locality for species
• †Anobium
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †Anolbanolis – type locality for genus
  • †Anolbanolis banalis – type locality for species
  • †Anolbanolis geminus – type locality for species
• †
  • †
• 

  Fossilized shell of the Eocene-Oligocene turtle Anosteira
  †Anosteira
  • †
  • † – type locality for species
  • †
• †Antherophagus
  • † – type locality for species
• Anthonomus
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• 

  A living Antilocapra, or pronghorn
  Antilocapra
  • †Antilocapra americana
• Apalone
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †Apatemys
  • † – type locality for species
  • †
  • † – or unidentified comparable form
  • † – type locality for species
  • †
• †Aphaena
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • †
  • †
  • † – type locality for species
• †Aphelops
  • †
• †
  • †
  • † – type locality for species
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • †
  • † – type locality for species
• Aquila
  • † – type locality for species
  • 

    A living Aquila chrysaetos, or golden eagle
    †Aquila chrysaetos
• Aralia
  • †
  • †
  • †
• †
  • †
• Araneus
• †
  • † – type locality for species
  • † – type locality for species
• †Araucaria
  • †
• †Archaeocyon
  • †
  • †
• †
  • †
• 

  Life restoration of the Eocene-Oligocene entelodont mammal Archaeotherium
  †Archaeotherium
  • †
  • †
  • † – type locality for species
• †Archaerhineura – type locality for genus
  • † – type locality for species
• Arcoa^[1]
  • �� – type locality for species^[1]
• †Arctocyon
  • †
  • †
• †
  • †
  • †
  • † – type locality for species
• 

  Restoration of an Arctodus, or short-faced bear, with a human to scale
  †Arctodus
  • †Arctodus simus
• †Arctostaphylos
  • †
• †
  • †
• †
  • †
• †Arenahippus
  • † – type locality for species
  • † – type locality for species
• †
  • †
  • †
  • †
  • † – type locality for species
• 

  Flower of a living Aristolochia, or birthwort
  †Aristolochia
  • †
• †
  • †
  • †
• †Armintomys
  • †Armintomys tullbergi
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
  • †
  • †
• 

  Fruit and foliage of a living Artocarpus, the genus including bread and jackfruit
  †Artocarpus – tentative report
  • †
• †Asarkina
  • † – type locality for species
• † – or unidentified comparable form
• Asio
  • †Asio flammeus
  • †Asio otus
• †Asplenium
  • †
  • †
  • †
  • †
  • †
  • †
• †
• †Asterotrygon
  • 

    An Asterotrygon maloneyi stingray
    †
• Astronium
  • †
• †Athyana
  • †
• †
  • †
  • † – type locality for species
• †
  • †
• †
• †
  • †
• †Avunculus
  • † – or unidentified comparable form
• †Axestemys – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †
  • †
• Aythya
  • †Aythya collaris
• 

  Living Azolla water ferns
  Azolla
  • †
• †Azygonyx
  • † informal
  • † – type locality for species
  • †
  • † – type locality for species

B[]

• †Babibasiliscus – type locality for genus
  • † – type locality for species
• †Baena
  • †Baena arenosa – type locality for species
• †Bahndwivici – type locality for genus
  • †Bahndwivici ammoskius – type locality for species
• †
  • † – or unidentified comparable form
  • † – type locality for species
  • †
  • †
• †Baiotomeus
  • †Baiotomeus douglassi
  • †Baiotomeus lamberti
• † – type locality for genus
  • † – type locality for species
• †
  • † – type locality for species
• † – or unidentified comparable form
• 

  Life restoration of the Paleocene-Eocene pantodont mammal Barylambda
  †Barylambda
  • † – type locality for species
  • †
• †Bathornis
  • † – type locality for species
• †Bathygenys
  • †
  • †
• †Bathyopsis
  • †
• 

  Restorative model of the Eocene shrew-like mammal Batodonoides
  †Batodonoides
  • †Batodonoides vanhouteni – type locality for species
• †Batrachosauroides – tentative report
• Bauhinia
  • †
  • †
• †Beilschmiedia
  • †
• †
  • †
• †
  • †
• †Berosus
  • † – type locality for species
  • † – type locality for species
• †
  • †
• Betula
  • †
  • †
  • †
• Biomphalaria
• Bison
  • 

    A living Bison bison
    †Bison bison
• †Bisonalveus – type locality for genus
  • †Bisonalveus browni – type locality for species
  • † – type locality for species
• †Blechnum
  • †
• Bledius
  • † – type locality for species
  • † – type locality for species
• †
  • †
• 

  Fossilized skeleton of the eocene-?Miocene boa snake Boavus
  †Boavus – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• Boletina
  • † – type locality for species
  • † – type locality for species
• †Bootherium
  • †Bootherium bombifrons
• †Borealosuchus
  • †Borealosuchus formidabilis
  • †Borealosuchus wilsoni – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
• †Boverisuchus
  • †Boverisuchus vorax
• †Bownomomys – type locality for genus^[2]
  • †Bownomomys americanus – type locality for species. Formerly known as .^[2]
  • †Bownomomys crassidens – type locality for species. Formerly known as .^[2]
• † – or unidentified comparable form
  • †
• †
  • † – type locality for species
• 

  Restorative portrait of the Miocene oreodont mammal Brachycrus
  †Brachycrus
  • †
  • †
  • †
• †
  • †
• †Brachyhyops
  • †
  • † – type locality for species
• †Brachyrhynchocyon
  • †
  • †
• †Brachyuranochampsa – type locality for genus
  • †Brachyuranochampsa eversolei – type locality for species
• Bracon
  • † – type locality for species
• Branta
  • 

    A living Branta canadensis, or Canada goose
    †Branta canadensis
• †
  • † – type locality for species
• †Brontops
• †
  • †
• †Bryophyte – or unidentified related form
• Bubo
  • †Bubo virginianus
• †
  • †
  • †
  • †
  • †
  • † – type locality for species
• †
  • †
• Buteo
  • †Buteo jamaicensis
  • †Buteo lagopus
  • †Buteo regalis – or unidentified comparable form
• 

  Mounted fossilized skeleton of the Miocene-modern bird of prey Buteogallus
  Buteogallus

C[]

• †Caedocyon
  • †Caedocyon tedfordi – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• 

  Life restoration of the Eocene-Oligocene cow-sized rhinoceros Subhyracodon. Charles R. Knight (1890s).
  †Caenopus
  • † – type locality for species
• †Caesalpinia
  • †
  • †
• †
  • † – type locality for species
• †
  • † – or unidentified comparable form
  • †
  • † – type locality for species
  • †
• †Calamospiza
  • †Calamospiza melanocorys
• †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• Calidris
  • 

    A living Calidris melanotos, or pectoral sandpiper
    †Calidris melanotos
• †Callomyia
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • †
  • †
  • †
  • †
  • †Calycites RR58 informal
  • †Calycites RR71 informal
• †Camelops
  • †Camelops hesternus – or unidentified comparable form
• †Canarium
  • †
• †Canavalia
  • †
• Canis
  • 

    Modern mounted skeleton of Canis lupus, the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus, or dire wolf
    †Canis dirus
  • †Canis latrans
  • †Canis lupus
• †Cantius
  • †Cantius abditus – type locality for species
  • †Cantius frugivorus
  • †Cantius mckennai
  • †
  • †Cantius ralstoni
  • † – type locality for species
  • †Cantius torresi
  • †Cantius trigonodus – type locality for species
• †
  • † – type locality for species
• Capella
  • †Capella gallinago
• †
  • † – type locality for species
• Caracara
  • 

    A living Caracara plancus, or southern crested caracara
    †Caracara plancus
• † – type locality for genus
  • † – type locality for species
• †
  • † – type locality for species
  • †
• Cardiospermum
  • 

    A leaf
    †
• Carduelis
• †
  • †
  • †
  • †
• †Carpodaptes
  • †
  • †
  • †
  • †
  • †
• †Carpolestes
  • † – type locality for species
  • †
  • 

    Life restoration of the Paleocene primate relative Carpolestes simpsoni
    †Carpolestes simpsoni – type locality for species
• †
  • †
• Carya
  • †
  • †
  • †
• Castanea
  • †
  • †
• Castor
  • †
• †Catopsalis
  • †Catopsalis alexanderi
  • †Catopsalis calgariensis
• 

  Living Cedrela trees
  Cedrela
  • †
• †
  • †
  • †
• †Cedrobaena – type locality for genus
  • †
• †
  • † – type locality for species
  • † – type locality for species
• †
  • †
• 

  Foliage and fruit of a living Celastrus, or staff vine
  †Celastrus
  • †
  • †
  • †
  • †
• †
  • †
• Celtis
  • †
  • †
  • †
  • †
• †
  • †
  • †
  • †
  • †
  • †
  • †
  • † – type locality for species
  • †
  • †
• †
  • † – type locality for species
• †Centrocercus
  • †Centrocercus urophasianus
• †Cephalogale
• †Ceratophyllum
  • †Ceratophyllum muricatum
• 

  Life restoration of the Paleocene-Eocene crocodilian Ceratosuchus
  †Ceratosuchus
  • †Ceratosuchus burdoshi
• Cercidiphyllum
  • †
  • †
  • † informal
  • † informal
  • †
  • † informal
  • † informal
• 

  A living Cercopis froghopper
  †Cercopis
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • †
• †
  • †
  • † – tentative report
• †
  • † – type locality for species
• 

  Life restoration of the Late Cretaceous-Eocene choristoderan reptile Champsosaurus
  †Champsosaurus
  • †Champsosaurus gigas
• †
  • 

    †
    †
• Chara
• Charadrius
  • †Charadrius montanus
  • †Charadrius vociferus
• Charina
  • †
• Cheilosia
  • † – type locality for species
  • †
• †Chelomophrynus – type locality for genus
  • † – type locality for species
• †Chilostigma – tentative report
  • †
• †Chiromyoides
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • †
• Chironomus
  • † – type locality for species
• 

  Fossilized skeleton of the Eocene turtle Chisternon
  †Chisternon
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
• † – or unidentified comparable form
• †Cholula
  • † – type locality for species
• †Choragus
  • † – type locality for species
• †Chordeiles
  • 

    A living Chordeiles minor, or common nighthawk
    †Chordeiles minor
• †Chriacus
  • †
  • †
  • †
  • †
  • †Chriacus oconostotae
  • †
• †
• †Cicadula
  • † – type locality for species
• †Cimolestes
• †
  • † informal
• 

  A living Cinnamomum, or cinnamon tree
  Cinnamomum
  • †
  • †
• Circus
  • †Circus cyaneus
• †Cissites
  • †
• Cissus
  • †
  • †
  • †
• †Cixius – tentative report
  • † – type locality for species
• 

  Flowers of a living Cladrastis, or yellowwood
  Cladrastis
  • † informal
  • † informal
• †
  • †
• †Cnemidaria
  • †
• †Coccothraustes
  • †Coccothraustes vespertinus
• 

  Fruit and foliage of a living Cocculus, or moonseed
  Cocculus
  • †
• †
  • † – type locality for species
• Colaptes
  • †Colaptes auratus
• †Colodon
  • †
• †
• †
  • † – type locality for species
  • † – or unidentified comparable form
• Colymbus
  • †
• †Compsemys
  • †Compsemys victa
• †
  • † – or unidentified comparable form
  • †
• 

  Illustration of fossilized vertebrae of the Late Cretaceous-Eocene snake Coniophis. Othniel Charles Marsh (1892).
  †Coniophis
  • † – type locality for species
  • † – type locality for species
• †Copecion
  • †
  • †
• †
  • †
• †Copelemur
  • † – type locality for species
  • †
  • †
• †
  • †
• †
  • † – or unidentified comparable form
  • †
• †Corizus – tentative report
  • † – type locality for species
• 

  Fossilized skull of the Oligocene-Miocene bone-crushing dog Cormocyon
  †Cormocyon
  • †
• Cornus
  • †
  • †
  • †
  • †
• Corvus
  • †Corvus brachyrhynchos
  • †Corvus corax
• †
  • † informal
• †Corylus
  • †
  • †
• • † – type locality for species
• 

  Life restoration of the Paleocene-Eocene pantodont mammal Coryphodon. Heinrich Harder (1920).
  †Coryphodon
  • †
  • †
  • †
  • †
  • †
• †
  • †
• Crataegus
• †Credneria
  • † – tentative report
  • †
• †
  • † – type locality for species
• Crocodylus
  • 

    Fossilized skull of the Eocene crocodilian "Crocodylus" affinis
    †Crocodylus affinis – type locality for species
  • † – type locality for species
• †Cryptocephalus
  • † – type locality for species
• Cryptorhynchus
  • † – type locality for species
• Cryptotis
• Culex
  • † – type locality for species
• †
  • †
  • †
• †
  • †
• †
  • †
• Cyclocarya
• †
  • †
• †
  • † – type locality for species
  • † – type locality for species
• 

  Underside of a fossilized cranium of the Oligocene-Miocene bone-crushing dog Cynarctoides
  †Cynarctoides
  • †Cynarctoides acridens
  • †Cynarctoides harlowi
  • †Cynarctoides luskensis – type locality for species
• †
  • †
  • †
  • †
• †
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
• †Cyrtomenus
  • † – type locality for species

D[]

• †Dalbergia
• †Daphoenictis
• 

  Life restoration of the Miocene bear-dog Daphoenodon
  †Daphoenodon
  • † – type locality for species
  • †
  • † – type locality for species
  • †
• †Daphoenus
  • †Daphoenus lambei
• †
  • †
• 

  A living Dasyatis stingray
  Dasyatis
• †Davidia
  • †
• †Dawsonicyon – type locality for genus
  • † – type locality for species
• †
  • †
• † – type locality for genus
  • † – type locality for species
• †
• †
  • † – type locality for species
• †
  • † – type locality for species
• Dendragapus
  • 

    A living Dendragapus obscurus, or dusky grouse
    †Dendragapus obscurus
• †Dendropanax
  • †
• †
  • †
• †Dennstaedtia
  • †
• †
  • †
• †Desmatippus
  • †Desmatippus tyleri
• †Desmatochoerus
  • †
  • †
• †
  • †
• †
  • †
• †
  • †
• †Desmocyon
  • †Desmocyon thomsoni
• † – tentative report
  • †
• †
  • † – type locality for species
  • †
• 

  Restoration of two of the Eocene even-toed ungulate Diacodexis being hunted by a primitive whale
  †Diacodexis
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• †Diatryma – type locality for genus
  • † – type locality for species
• 

  Restoration of the Oligocene-Miocene hornless rhinoceros Diceratherium. Robert Bruce Horsfall (1913).
  †Diceratherium
  • †
  • †
  • †
• • †
  • †
• Dicranomyia
  • †
  • † – type locality for species
• Dicrostonyx
• †
• †
  • †
  • †
• †Didymictis
  • †
  • †
  • †
  • †
  • † – or unidentified comparable form
• †
  • †
  • † – type locality for species
• †Dilophodon
  • † – type locality for species
  • †
• 

  Life restoration of the Eocene-Miocene false saber-toothed cat Dinictis. Robert Bruce Horsfall (1913).
  †Dinictis
  • †
• †Dinohyus
• †Diospyros
  • †
  • †
  • †
• †
  • †
• †
  • †
• †Diplocynodon
• †
  • † – type locality for species
• 

  Fossilized skeleton of the Early Cretaceous-Eocene bony fish Diplomystus preserved in the act of swallowing another fish
  †Diplomystus
  • †Diplomystus dentatus
• †Dipoides
  • †
• †
  • †
  • † – type locality for species
  • † – type locality for species
  • †
• †
  • †
  • † – type locality for species
• 

  Fossilized samara of the Eocene-modern Dipteronia tree
  Dipteronia
  • † informal
  • †
• Discus
• †Dissacus
  • † – type locality for species
  • †
  • †
  • †
• †Distylium
  • †
• †
  • †
• 

  A living Dolichopus fly
  Dolichopus
• †Dombeya
  • †
• †
  • † – or unidentified comparable form
• †
  • † – or unidentified comparable form
• †
  • †
• †
  • †
• †Drimys
• Dryocoetes
  • † – type locality for species
  • †
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• 

  Illustration of a modern Dryopteris, or wood fern
  Dryopteris
  • †
  • †
  • †
  • †
  • †
  • †
• †
  • † – type locality for species
  • †
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species

E[]

• 

  Fossilized shell of the Eocene turtle Echmatemys
  †Echmatemys
  • †
  • †
  • †
  • † – type locality for species
  • †
  • †
  • †
• †Eclytus
  • † – type locality for species
• 

  Fossilized skull of the Paleocene-Eocene mammal Ectocion
  †Ectocion
  • †Ectocion cedrus – type locality for species
  • †Ectocion collinus – type locality for species
  • †Ectocion major – or unidentified comparable form
  • †Ectocion mediotuber – type locality for species
  • †Ectocion osbornianus
  • †Ectocion parvus
  • †Ectocion superstes
• †Ectoconus
  • † – type locality for species
  • †
• †Ectoganus
  • †
  • †
  • †
  • †
  • †
• †Ectopistes
  • 

    Taxidermied male Ectopistes migratorius, or passenger pigeon
    †Ectopistes migratorius
• †Ectopocynus
  • † – type locality for species
  • † – type locality for species
• †
  • †
  • † – or unidentified comparable form
  • † – type locality for species
  • † – type locality for species
  • †
  • †
  • † – type locality for species
  • †
  • †
  • †
• †Elaeodendron
  • †
• †
  • † – or unidentified comparable form
• †
  • † – or unidentified comparable form
  • †
• †
  • †
  • † – or unidentified comparable form
• † – type locality for genus
  • † – type locality for species
• †Enhydrocyon
  • †Enhydrocyon basilatus
  • †
  • †
• Enochrus
  • † – type locality for species
• 

  Life restoration of the Eocene-Oligocene mammal Entelodon. Charles R. Knight.
  †Entelodon
  • † – or unidentified comparable form
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
• 

  Life restoration of a pair of the Eocene uintathere mammal Eobasileus. Charles R. Knight (1890s).
  †Eobasileus
  • †Eobasileus cornutus
• †
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Eoconodon
  • †Eoconodon copanus
• † – type locality for genus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• † – type locality for genus^[3]
  • † – type locality for species^[4]
• †
  • † – type locality for species
• 

  Life restoration of the Eocene horse Eohippus. Heinrich Harder (1920).
  †Eohippus
  • †
• † – type locality for genus
  • † – type locality for species
• † – tentative report
  • † – type locality for species
• †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †Eorhinophrynus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Eostangeria
  • †
• †Eostrix
  • † – type locality for species
• 

  Life restoration of the Eocene brontothere mammal Eotitanops
  †Eotitanops
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Epicaerus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • †
  • † – type locality for species
  • †
  • † – type locality for species
• 

  Underside of the fossilized cranium of the Eocene horse Epihippus
  †Epihippus
  • †
• †
  • †
• †
  • †
• †Equisetum
  • †
  • †
  • † informal
  • †
• Equus
  • †Equus conversidens
• Eremophila
  • †Eremophila alpestris
• 

  Erythrina speciosa inflorescences, Brazil
  Erythrina
  • † – type locality for species
• Esox
  • † – type locality for species
• †
  • †
  • †
  • †
  • †
• †Eucastor
• †Eucommia
  • †
• †
  • †
• 

  Branches and fruits of a living Eugenia
  Eugenia
  • †
• †Eugnamptus
  • † – type locality for species
  • †
• †
  • †
• †
  • †
• †Euparius
  • † – type locality for species
  • † – type locality for species
• Euphagus
  • †Euphagus cyanocephalus
  • †
• †
  • †
• 

  Fossilized mandible of the Eocene-Oligocene false saber-toothed cat Eusmilus
  †Eusmilus
  • †
• Eutamias
• †
  • †
• †
  • † – or unidentified comparable form

F[]

• Fagus
  • †
  • †
• Falco
  • †Falco columbarius
  • † – type locality for species
  • 

    A living Falco mexicanus, or prairie falcon
    †Falco mexicanus
  • †Falco rusticolus
  • †Falco sparverius
• † – type locality for genus
  • † – type locality for species
• Ficus
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • † – tentative report
  • †
  • † – tentative report
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
• 

  Fossilized skeleton of the Eocene bird Fluvioviridavis
  †Fluvioviridavis – type locality for genus
  • † – type locality for species
• †
  • †
• †Fortuna
  • † – or unidentified comparable form
• †
  • †
  • † – type locality for species
  • †
• †
  • †
• †
  • †
  • †
• †
  • †
• 

  Illustrations of the flowers and foliage of a living Fraxinus, or ash tree, with insets further detailing its anatomy
  †Fraxinus
  • †
  • †
  • †
• †Fulgora
  • † – type locality for species
  • † – type locality for species

G[]

• †Gagadon
  • †Gagadon minimonstrum
• †
  • †
• †Galecyon
  • †
• Galerita
  • † – type locality for species
• 

  Fossilized skeleton of the Eocene bird Gallinuloides
  †Gallinuloides – type locality for genus
  • † – type locality for species
• Gastrocopta
• † – type locality for genus
  • † – type locality for species
• †
  • †
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
• Gerrhonotus – or unidentified comparable form
• Ginkgo
  • 

    Restored foliage of the Late Cretaceous-Miocene ginkgo tree Ginkgo adiantoides
    †Ginkgo adiantoides
• †Gleditsia – or unidentified related form
  • † informal
• †
• †Glypta
  • † – type locality for species
• †Glyptosaurus – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• Glyptostrobus
  • 

    Fossilized foliage of the Early Cretaceous-Pleistocene conifer Glyptostrobus europaeus
    †Glyptostrobus europaeus
  • †
• † – tentative report
• † – type locality for genus
  • † – type locality for species
• †Goniacodon
  • † – type locality for species
• †
  • †
• Gopherus
  • †
• †Gracilocyon
  • †
  • †
• †
• †
  • †
  • † – type locality for species
• † – tentative report
  • †
• †
• Grus
  • †Grus canadensis
  • † – type locality for species
• Gulo
  • 

    A living Gulo gulo, or wolverine
    †Gulo gulo
• †Gymnetron
  • † – type locality for species
• †Gymnocladus
  • †
• Gyraulus – or unidentified comparable form

H[]

• †Habrosaurus
  • †Habrosaurus dilatus
• †Hadrianus
  • † – type locality for species
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• 

  Restoration of the Paleocene-Eocene mesonychian mammal Hapalodectes
  †Hapalodectes
  • †
  • †
• †Hapalorestes
  • † – type locality for species
• †
  • †
  • † – type locality for species
• †
• †
  • †
• †Haplolambda
  • †
• †
  • † – type locality for species
  • †
  • † – type locality for species
  • †
  • †
  • †
• 

  Fossilized skull of the mesonychian mammal Harpagolestes
  †Harpagolestes
  • † – type locality for species
• †
  • † – or unidentified comparable form
• †
  • †
  • †
• †Helaletes – type locality for genus
  • † – type locality for species
• †
  • †
  • †
  • †
  • † – or unidentified comparable form
• †Helix
  • †
  • †
• 

  Fossilized skull of the Oligocene lizard Helodermoides
  †Helodermoides
  • †Helodermoides tuberculatus
• †
  • †
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
  • †
• 

  Fossilized lower jaw of the Miocene-Pleistocene llama relative Hemiauchenia
  †Hemiauchenia
• †Hemipsalodon
  • †
• Hemitelia
  • †
• †
  • †
  • †
• †
  • †
• †
• †Heptodon
  • †
  • †
• 

  Life restoration of the Eocene-Miocene mammal Herpetotherium
  †Herpetotherium
  • † – type locality for species
  • †Herpetotherium knighti
  • † – or unidentified comparable form
• †Hesperocyon
  • †
• †
  • † – type locality for species
• †
  • † – type locality for species
• †Heteraletes
  • †
• †
  • †
  • †
• †
  • †
  • †
  • †
• Hirundo – or unidentified comparable form
  • †Hirundo pyrrhonota
• †Holospira
• †
  • † – type locality for species
• †Homalota
  • † – type locality for species
• †Homogalax
  • †
• † – type locality for genus
  • † – type locality for species
• 

  Life restoration of the Eocene-Oligocene false saber-toothed cat Hoplophoneus. Robert Bruce Horsfall (1913).
  †Hoplophoneus
  • †
  • †
• †Hovenia
  • † – or unidentified comparable form
• †
  • † – type locality for species
• †
  • † – type locality for species
  • †
  • † – type locality for species
  • † – type locality for species
• †Hutchemys
  • †
• 

  Life restoration of the Eocene-Miocene creodont mammal Hyaenodon
  †Hyaenodon
  • †Hyaenodon crucians
  • †Hyaenodon horridus
  • †Hyaenodon megaloides
  • †Hyaenodon montanus
  • †Hyaenodon mustelinus
  • †Hyaenodon venturae
  • †Hyaenodon vetus
• Hydrangea
  • †
  • † informal
• Hydrobia – report made of unidentified related form or using admittedly obsolete nomenclature
• 

  A living Hydrobius water scavenger beetle
  Hydrobius
  • † – type locality for species
  • † – type locality for species
• †Hydrochus
  • † – type locality for species
• †Hydromystria
  • †
• †Hylobius
  • † – type locality for species
  • † – type locality for species
• 

  Life restoration of the Eocene odd-toed ungulate Hyopsodus
  †Hyopsodus
  • †
  • †
  • †Hyopsodus lepidus – type locality for species
  • †
  • †
  • †
  • †
  • † – type locality for species
  • †
  • † – type locality for species
  • † – type locality for species
  • †
  • †
  • † – type locality for species
  • †
  • †
  • †
• †Hypertragulus
  • †
• †Hypisodus
  • †
  • †
• 

  Life restoration of the Miocene horse Hypohippus. Heinrich Harder (1920).
  †Hypohippus
  • †Hypohippus affinis
• †Hypolagus
  • † – or unidentified comparable form
• †Hyporhina
  • †
• †Hypsiops
  • †
• †Hyrachyus
  • †
  • † – type locality for species
• 

  Life restoration of the Eocene-Oligocene odd-toed ungulate Hyracodon. Charles R. Knight (1896).
  †Hyracodon
  • †
  • †
  • †
• †Hyracotherium
  • †Hyracotherium vasacciense

I[]

• 

  Fossilized skeleton of the Eocene bat Icaronycteris
  †Icaronycteris – type locality for genus
  • †Icaronycteris index – type locality for species
• †Ignacius
  • † – type locality for species
  • †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †Indusia
  • † – type locality for species
• †
  • †
  • †
• †Intyrictis
  • †
• † – type locality for genus
  • † – type locality for species
• 

  Mounted fossilized skeleton of the Eocene-Oligocene rodent Ischyromys
  †Ischyromys
  • †
  • †
• †
  • †
  • † – type locality for species
• †
  • †
• †Iulus
  • † – type locality for species

J[]

• †
  • †
• †
  • † – type locality for species
• †
  • † informal
  • † informal
• †
  • † – or unidentified comparable form
• †
• †
  • †
• Juglans
  • †
  • †
  • †
  • †
• 

  Fossilized skeleton of the Eocene wading bird Juncitarsus
  †Juncitarsus – type locality for genus
  • † – type locality for species
• Junco – or unidentified comparable form
  • †Junco hyemalis
• †

K[]

• †Kalmia
  • †
• †Kalobatippus
  • †
  • †
• 

  Fossilized skeleton of the Eocene bony fish Knightia
  †Knightia
  • †Knightia eocaena
• †
  • †
  • †
  • †
  • †
  • †
  • †
• Koelreuteria
  • †
• †
  • † – type locality for species
• †Kydia – or unidentified related form
  • † informal

L[]

• †
  • †
  • † – type locality for species
  • †
  • †
• Laccobius
  • † – type locality for species
• †
• 

  A living Lagopus, or ptarmigan
  †Lagopus
  • †Lagopus leucurus – or unidentified comparable form
• †Lambdotherium
  • †
• †Lambertocyon
  • †Lambertocyon eximius
  • † – type locality for species
• Lanius
  • †Lanius ludovicianus
• Larus – or unidentified comparable form
• †
  • †
• Lathrobium
  • † – type locality for species
• †Laurinoxylon
  • †
• †
  • †
  • †
• 

  Living Laurus, or laurel trees
  Laurus
  • †
  • †
  • †
  • †
  • † – tentative report
  • †
  • †
• †
  • †
  • †
  • †
  • † – type locality for species
• Leiocephalus
• †
  • †
• 

  Illustration of a living Lepisosteus, or gar
  Lepisosteus
  • † – or unidentified comparable form
  • †
• †
  • †
  • †
  • † – type locality for species
  • †
• † – or unidentified comparable form
• 

  Restoration of the Oligocene-Miocene oreodont mammal Leptauchenia
  †Leptauchenia
  • †
  • †
• †Leptictis
  • †
• †Leptocyon
  • †
• †Leptolambda
  • †
• 

  Life restoration of the Eocene-Oligocene even-toed ungulate Leptomeryx
  †Leptomeryx
  • †
  • †
  • †
  • †
  • †
  • † – type locality for species
• †Leptoreodon
• †
  • †
  • † – type locality for species
• †Leptotragulus
  • † – or unidentified comparable form
  • †
  • †
• Lepus
• Lepyrus – tentative report
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
• †Leucosticte
  • †Leucosticte arctoa
• † – type locality for genus
  • † – type locality for species
• †
  • †
  • † – type locality for species
• 

  Top view of a fossilized skull of the Eocene creodont mammal Limnocyon
  †Limnocyon
  • † – type locality for species
  • †
  • † – type locality for species
  • † – type locality for species
  • †Limnocyon verus – type locality for species
• †
• 

  Fossilized skeleton of the Eocene freshwater frigatebird Limnofregata
  †Limnofregata – type locality for genus
  • †Limnofregata azygosternon – type locality for species
  • † – type locality for species
• Lindera
  • †
  • † – type locality for species
• †Lisserpeton
  • †Lisserpeton bairdi
• †Listronotus
  • † – type locality for species
• †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • 

    A larva
    † - type locality for species
• † – type locality for genus
  • † – type locality for species
• †Lithophysa – type locality for genus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• 

  Life restoration of the Paleocene-Eocene bird Lithornis
  †Lithornis
  • †Lithornis plebius – type locality for species
  • †Lithornis promiscuus – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • † – type locality for species
  • †
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• †
  • †
  • †
  • †
• †^[5]
  • † – type locality for species^[5]
• † – type locality for genus
  • †
  • †
  • †
  • † – type locality for species
• †
  • †
  • † – type locality for species
  • † – or unidentified comparable form
  • †
• † – type locality for genus
  • † – type locality for species
• †Lyctocoris – tentative report
  • † – type locality for species
• Lygodium
  • †
  • †
• Lynx
  • 

    A living Lynx lynx, or Eurasian lynx
    †Lynx lynx – tentative report
• †Lystra – tentative report
  • † – type locality for species
  • † – type locality for species

M[]

• †
  • †
  • †
  • †
  • †
  • †
• †Macginitiea
  • †Macginitiea gracilis
  • †
• 

  Restorative portrait of the Eocene saber-toothed creodont mammal Machaeroides eothen
  †Machaeroides
  • †
  • † – type locality for species
• †
  • †
• Macrocranion
  • † – type locality for species
  • †
  • †
• †
  • † – type locality for species
• 

  Close-up view of a Magnolia flower
  Magnolia
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
• †
  • † – type locality for species
  • †
• †
  • †
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Mammacyon
  • † – type locality for species
• †Mammuthus
  • 

    Life restoration of a herd of Mammuthus columbi, or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909).
    †Mammuthus columbi
• Marmota
• †
  • † – type locality for species
• †
  • †
• †Megacerops
  • † – type locality for species
• †
  • †
• †
  • †
  • †
  • †
• †
  • †
• 

  Restorative portrait, reconstructed skull, and actual fossil of the Miocene weasel relative Megalictis
  †Megalictis
  • †Megalictis ferox
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †
  • †
• †Meliosma
  • †
  • †
• 

  Life restoration of the Eocene mammal Meniscotherium. Robert Bruce Horsfall (1913).
  †Meniscotherium
  • †
  • †
  • †
  • †
• †
  • †
• †
  • † – type locality for species
  • †
• 

  Life restoration of the Miocene rhinoceros Menoceras
  †Menoceras
  • †
  • †Menoceras barbouri
• †Menops
  • †
  • † – or unidentified comparable form
• †Mentoclaenodon
  • † – type locality for species
• Mergus
  • †Mergus merganser
• 

  Life restoration of the Miocene three-toed horse Merychippus
  †Merychippus
  • †
  • † – or unidentified comparable form
  • †
• †Merychyus
  • †Merychyus arenarum
  • †
  • † – or unidentified comparable form
  • †
• † – tentative report
  • † – type locality for species
• †Merycochoerus
  • †
  • †
  • †
• 

  Mounted fossilized skeleton of the Miocene pronghorn Merycodus
  †Merycodus
  • † – or unidentified comparable form
  • † – or unidentified comparable form
• †Merycoides
  • †
  • †
• †Merycoidodon
  • † – type locality for species
  • †
  • † – or unidentified comparable form
• †Mesatirhinus
  • †
• †Mesocyon – report made of unidentified related form or using admittedly obsolete nomenclature
  • †
• †Mesodma
  • † – type locality for species
  • †Mesodma formosa
  • †Mesodma garfieldensis – or unidentified comparable form
  • †Mesodma hensleighi
  • †Mesodma pygmaea
• 

  Life restoration of the Eocene-Oligocene horse Mesohippus. Heinrich Harder (c. 1920).
  †Mesohippus
  • †
  • † – or unidentified comparable form
• † – or unidentified comparable form
  • †
• †Mesonyx
  • †Mesonyx obtusidens – type locality for species
• †Mesoreodon
  • †
  • † – type locality for species
• †
  • †
• 

  Life restoration of the Eocene pangolin relative Metacheiromys
  †Metacheiromys
  • †Metacheiromys dasypus – type locality for species
  • †Metacheiromys marshi – type locality for species
• †
  • † – type locality for species
• †Metamynodon
  • †Metamynodon planifrons – or unidentified comparable form
• †
  • †
• †Metarhinus
• Metasequoia
  • †Metasequoia occidentalis
• †Metatomarctus
  • †Metatomarctus canavus
• 

  Life restoration of the Paleocene-Eocene mammal Miacis
  †Miacis
  • †
  • †
  • †
  • †
  • † – type locality for species
  • †
  • †
• †Michenia
• Micrasema – tentative report
  • † – type locality for species
• †
  • †
• †Microcosmodon
  • †Microcosmodon conus – type locality for species
  • †Microcosmodon rosei – type locality for species
• †
  • †
  • † – type locality for species
• †
  • †
  • †
  • †
  • †
• 

  Illustration of the shell in multiple views of a llving Microphysula land snail
  Microphysula – or unidentified comparable form
• †
  • †
• †
  • † – type locality for species
• †Microsyops
  • † – type locality for species
  • †
  • †
  • † – type locality for species
  • †
  • †
  • †
• Microtus
  • 

    A living Microtus pennsylvanicus, or meadow vole
    †Microtus pennsylvanicus
• • †
• †
  • †
  • † – type locality for species
• †Mimetodon
  • †Mimetodon churchilli – type locality for species
  • †
• †Mimoperadectes
  • †Mimoperadectes houdei – type locality for species
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• 

  Life restoration of the Eocene-Oligocene oreodont mammal Miniochoerus
  †Miniochoerus
  • † – type locality for species
  • † – type locality for species
  • †
  • †Miniochoerus gracilis
• †
  • †
• †
  • † – or unidentified comparable form
  • †
• †Miocyon
  • † – or unidentified comparable form
• †
  • †
• †Miohippus
  • †
• †
  • †
• †
• 

  Fossilized skeleton of the Eocene perch relative Mioplosus
  †Mioplosus
• †
  • †
• †Miotapirus
  • †Miotapirus harrisonensis – type locality for species
• †Miotylopus
  • †
  • †
  • † – type locality for species
• 

  Restoration of the Pliocene-Pleistocene Miracinonyx, or American cheetah
  †Miracinonyx
  • †Miracinonyx studeri
• †Mithrandir
  • †
• †Mitostylus
  • † – type locality for species
• †
  • †
• Mnemosyne
  • † – type locality for species
• †
  • †
• †Monosaulax
  • † – or unidentified comparable form
• 

  Life restoration of the Miocene chalicothere mammal Moropus threatening a pair of the bear-dog Daphoenodon. Jay Matternes (1964).
  †Moropus
  • †
• Morus
  • †
• †
  • †
• Mustela
  • †
  • †Mustela nigripes
• Mycetobia – tentative report
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• 

  Fruit of a living Myrica, or firetree
  Myrica
  • †
  • †
  • †
• †
  • †
• Myrmica
• †
  • †
• †
  • †
  • † – type locality for species
  • † – type locality for species
• †
  • †
  • † – type locality for species
• †
  • †
  • †

N[]

• †
  • † – type locality for species
  • †
• †
  • † – type locality for species
  • †
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • †
• †Nanotragulus
  • † – type locality for species
  • †
• † – type locality for genus
  • † – type locality for species
• †Navajovius
  • †
• †Neanis
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • †
• 

  A living Nelumbo lotus
  †Nelumbo
• †Neocathartes
  • †Neocathartes grallator
• †
  • †
• †Neoliotomus
  • †Neoliotomus conventus
  • †Neoliotomus ultimus
• 

  Mounted fossilized skeleton of the Miocene Neophrontops
  Neophrontops
  • †
  • †Neophrontops americanus
• †Neoplagiaulax
  • †Neoplagiaulax grangeri – tentative report
  • †Neoplagiaulax hunteri
  • †Neoplagiaulax jepi – type locality for species
  • †Neoplagiaulax mckennai – type locality for species
  • †Neoplagiaulax nelsoni
• †
  • † – type locality for species
• Neotoma
• †
  • †
• †Nexuotapirus
  • †
• †Niglarodon
• †
  • †
  • † – type locality for species
  • †
• †
  • †
• †
  • †
• †Nosodendron
  • † – type locality for species
• †Notharctus
  • † – type locality for species
  • †Notharctus robustior
  • 

    Mounted fossilized skeleton of the Eocene primate Notharctus tenebrosus
    †Notharctus tenebrosus – type locality for species
  • †Notharctus venticolus
• †Notogoneus
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• † – tentative report
  • † – type locality for species
• †Nototamias – or unidentified comparable form
• †Nucifraga
  • †Nucifraga columbiana
• Numenius
  • †Numenius americanus
  • 

    A taxidermied Numenius borealis, or Eskimo curlew
    †Numenius borealis
• †Nyctea
  • †Nyctea scandiaca
• †
  • †
  • † – type locality for species
  • † – type locality for species
  • †
• †Nyssa
  • †
  • †

O[]

• Ochotona
  • 

    A living Ochotona princeps, or American pika
    †Ochotona princeps
• Ocotea
  • †
  • † informal
• †Odaxosaurus
  • † – or unidentified comparable form
  • †Odaxosaurus piger
• †
  • † – or unidentified comparable form
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
  • †
• † – tentative report
• †
• †
  • †
• †
  • † – type locality for species
• †
• †
  • †
  • †
• Ondatra
  • †
• †Onoclea
  • †
• 

  Restoration of the Eocene bat Onychonycteris
  †Onychonycteris – type locality for genus
  • †Onychonycteris finneyi – type locality for species
• †Oodectes
  • † – type locality for species
  • †
• Ophryastes
  • † – type locality for species
• †Opisthotriton
  • †
• 

  A living Oreamnos, or mountain goat
  Oreamnos
• †
• †Oreodontoides
  • †
• Oreohelix
  • †
• †
  • †
  • †
• †Oreopanax
  • †
• †Ormiscus
  • † – type locality for species
• 

  Mounted fossilized skeleton of the Eocene horse Orohippus
  †Orohippus
  • † – type locality for species
  • †
  • † – type locality for species
  • †
• †Orthogenysuchus – type locality for genus
  • †Orthogenysuchus olseni – type locality for species
• †Osbornodon
  • † – type locality for species
• †Osmanthus
  • †
• 

  Living Osmunda ferns
  †Osmunda
  • †
• †
• †Otarocyon
  • †
• †
  • † – type locality for species
  • †
• †Otiorhynchus
  • † – type locality for species
  • † – type locality for species
• †Ototriton – type locality for genus
  • †Ototriton solidus – type locality for species
• †
  • †
  • †
• Ovis
  • 

    A living Ovis canadensis, or bighorn sheep
    †Ovis canadensis
• †Oxyacodon
  • †
  • †
  • †
• †Oxyaena
  • †
  • †
  • †
  • †
• †
  • †
• 

  Life restoration of a pair of the Oligocene-Miocene camel Oxydactylus. Robert Bruce Horsfall (1913).
  †Oxydactylus
  • † – or unidentified comparable form
  • † – type locality for species
  • †
• †
  • † – type locality for species
  • †

P[]

• 

  Fossilized mandibles of the Paleocene-Eocene mesonychian mammal Pachyaena
  †Pachyaena
  • †
  • †
  • †
• Pachycondyla
  • † – type locality for species
• †Pachylobius
  • †
• †
  • †
  • †
  • †
  • † – tentative report
• †Palaearctonyx
  • † – type locality for species
• †
  • † – or unidentified comparable form
  • †
• †
  • †
  • †
  • †
• †
  • †
• †
  • †
• †Palaeogale
  • †
  • †
• 

  Restoration of the Oligocene rabbit relative Palaeolagus
  †Palaeolagus
  • †
  • †
  • † – type locality for species
  • †
  • †
  • † – type locality for species
  • †
• †Palaeonictis
  • †
  • † – type locality for species
  • † – type locality for species
• †Palaeophasianus – type locality for genus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Palaeoryctes
  • † – type locality for species
  • †
  • †
• † – or unidentified comparable form
  • †
• †Palaeosinopa
  • †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • †
  • †
• 

  Restorative model and fossilized skull of the Eocene brontothere mammal Palaeosyops
  †Palaeosyops
  • †
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †Palatobaena – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
• †
  • †
  • † – type locality for species
• †Paleoamphiuma – type locality for genus
  • † – type locality for species
• †
  • † informal
• †
  • †
• †
  • †
• †
  • † – type locality for species
  • † – type locality for species
  • †
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• Paliurus
  • †
• †
  • †
• †
  • †
• Panthera
  • 

    A living Panthera leo, or lion
    †Panthera leo
• †Pantolambda
  • †
  • † – or unidentified comparable form
• †
  • † – type locality for species
  • † – or unidentified comparable form
• †Paracathartes
  • †Paracathartes howardae
• †Paracosoryx
  • †
• †Paracynarctus
  • †
• †
  • †
  • †
• †Paraenhydrocyon
  • †Paraenhydrocyon josephi
  • †
  • †
• †
  • † – type locality for species
• †
  • † – type locality for species
• †Parahippus
  • †
  • † – tentative report
  • † – type locality for species
• †
  • † – type locality for species
• †
  • †
  • †
• †Paramys
  • † – type locality for species
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
• †Parandrita
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †
  • †
• †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • † – type locality for species
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †Paratomarctus
  • †
• 

  Life restoration the Eocene-Oligocene camel Paratylopus (upper right)
  †Paratylopus
  • †
  • †
• †Parectypodus
  • †
  • †Parectypodus lunatus
  • †Parectypodus sinclairi
  • †Parectypodus sylviae
• †
  • †
• †Parictis
  • †
  • †
  • †
  • †
• †
  • †
  • †
• †
  • †
• †
  • †
• †
  • †
• †Parvitragulus
  • †
• 

  Life restoration of the Eocene creodont mammal Patriofelis. Charles R. Knight (1896).
  †Patriofelis
  • †Patriofelis ferox – type locality for species
  • †
• †Patriomanis
  • †Patriomanis americanus
• †
  • † – type locality for species
• †Peltosaurus
• †Pelycodus
• †
  • †
• †
  • †
• †
  • †
• † – tentative report
• †
• †Pentacosmodon
  • †Pentacosmodon pronus – type locality for species
• †Peradectes
  • †
  • †
  • † – type locality for species
  • †
  • †
• 

  Fossilized mandible of the Eocene-Miocene mammal Peratherium
  †Peratherium
  • †
  • †
  • †
• †Perchoerus
  • †
• †
  • †
  • †
• Perognathus
  • †
• 

  A living Peromyscus, or deer mouse
  Peromyscus
• Persea
  • †
  • † – type locality for species
  • †
• †
  • †
• †Persites
  • †
• †
• †Phalaenoptilus
  • †Phalaenoptilus nuttallii
• †Phareodus
  • †Phareodus encaustus
  • †Phareodus testis
• †Phenacocoelus
  • †
• †
  • † – type locality for species
• †Phenacodontid
• 

  Life restoration of the Paleocene-Eocene ungulate Phenacodus. Charles R. Knight (1898).
  †Phenacodus
  • † – type locality for species
  • †
  • †
  • †
  • †
  • †
  • †
• †
  • † – type locality for species
  • † – type locality for species
  • †
  • †
  • †
• Phenacomys
  • †
• †Phenolia
  • † – type locality for species
• †Philodendron – or unidentified related form
  • † informal
• †Philotrox
  • †Philotrox condoni
• 

  Illustration of a fossilized skull in multiple views of the Oligocene-Miocene bone-crushing dog Phlaocyon
  †Phlaocyon
  • †Phlaocyon annectens
  • †
  • †Phlaocyon minor
  • †
• †Phoebe
• Phragmites – tentative report
  • †
• †
  • †
  • †
• 

  A living Phyllobius weevil
  Phyllobius
  • †
• Physa
• Phytocrene
  • †
• Pica
  • †Pica pica
• †Piceoerpeton – type locality for genus
  • † – type locality for species
• †
  • †
  • †
  • †
• †
  • † – type locality for species
• 

  A living Pinus, or pine tree
  Pinus
  • †
  • †
  • † informal
  • †
  • †
  • †
  • †
  • †
  • †
• †
  • † – or unidentified comparable form
• Pipilo
  • 

    A living Pipilo chlorurus, or green-tailed towhee
    †Pipilo chlorurus
• †
  • †
  • †
  • †
  • † – type locality for species
• †
  • †
  • †
• †Plagiomene
  • †
  • †
• †
  • †
• 

  Illustration of a branch with nuts from a Planera, or water elm tree
  †Planera
  • †
• †Planetetherium
  • †Planetetherium mirabile
• †
  • †
• †
  • †
• †Plastomenoides
  • †
• †
  • †
  • † – type locality for species
  • † – type locality for species
  • †
  • † – type locality for species
• †
  • †
• †
  • †
• 

  Leaves and fruit of a living Platanus, or plane tree
  Platanus
  • †
  • † informal
  • †
  • †
  • †
  • †
  • †
  • †
• Platycarya
  • †
  • † informal
  • †
  • †
• Platynus
  • † – type locality for species
  • † – type locality for species
• Plecia
  • † – type locality for species
  • † – type locality for species
• 

  Life restoration of the Paleocene-Eocene primate Plesiadapis
  †Plesiadapis
  • † – type locality for species
  • †
  • †Plesiadapis cookei
  • †
  • † – type locality for species
  • †
  • †
  • †
  • † – type locality for species
• †
  • † – type locality for species
• †
  • †
  • †
• †Poabromylus
  • †
• †Poebrodon
• 

  Life restoration of the Eocene-Oligocene camel Poebrotherium
  †Poebrotherium
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • † – or unidentified comparable form
• Polygyra
• †
  • † – type locality for species
• 

  Montage of photographs in spring (top left), summer (top right), autumn (bottom left), and winter (bottom right) of Populus, or poplar tree
  Populus
  • †
  • †
  • †
  • † informal
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
• Porzana
  • †Porzana carolina
• †Potamogeton
• †
  • †
• 

  Life restoration of the Paleocene-Eocene waterfowl Presbyornis
  †Presbyornis
• †Primobucco
  • †
  • †
• †Princetonia
  • †
• †Priscacara
• †
• †Pristichampsus
• †Probathyopsis
  • †
  • †
  • †
• †
  • † – type locality for species
• †Procaimanoidea
  • †Procaimanoidea kayi – type locality for species
• †Procamelus
  • †Procamelus grandis
• †
  • † – or unidentified comparable form
  • † – or unidentified comparable form
• †Prochetodon
  • †Prochetodon cavus – type locality for species
  • †Prochetodon foxi
  • †Prochetodon taxus – type locality for species
• † – tentative report
  • † – type locality for species
• †Procynodictis
  • †
• †
  • † – type locality for species
  • † – or unidentified comparable form
  • † – or unidentified comparable form
  • †
• †
  • †
• †Prolimnocyon
  • †
  • †Prolimnocyon antiquus
  • †
  • †
  • † – type locality for species
• †Promartes
  • †
  • †
  • †
• 

  Restoration of the Miocene hippopotamus-like oreodont Promerycochoerus both onshore and in the water. Robert Bruce Horsfall (1913).
  †Promerycochoerus
  • †
  • †
• †
  • †
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Proscalops
  • †
  • † – or unidentified comparable form
• †
  • †
• † – tentative report
  • †
• † – type locality for genus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
  • †
  • † – type locality for species
• †Protictis
  • † – type locality for species
  • †
  • †
  • †
  • †
• †
  • †
• 

  Life restoration of a female (left) and male of the Oligocene-Miocene even-toed ungulate Protoceras. Charles R. Knight (1896).
  †Protoceras
  • † – type locality for species
• †Protochelydra
  • †Protochelydra zangerli – or unidentified comparable form
• †
  • † – or unidentified comparable form
• †Protohippus
  • † – or unidentified comparable form
• †Protolabis
  • † – or unidentified comparable form
• †Protomarctus
  • †
• †
• †
  • †
• †Protoreodon
  • † – or unidentified comparable form
  • † – or unidentified comparable form
  • †
• 

  Protorohippus
  †Protorohippus
  • †
  • †
• † – tentative report
  • † – type locality for species
• †
  • †
• †Protostrix
  • †
  • † – type locality for species
• †
  • † – type locality for species
  • † – type locality for species
  • †
  • †
  • †
• †Protungulatum
  • †Protungulatum donnae
  • †
  • †
• 

  Illustration of a fossilized skull of the Eocene camel Protylopus
  †Protylopus
  • †
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• Prunus
  • †
  • †
• 

  Restoration of the Miocene cat Pseudaelurus
  †Pseudaelurus
  • †
• †Pseudhipparion
  • †
• †
  • †
• †
  • † – or unidentified comparable form
• †Pseudocrypturus – type locality for genus
  • †Pseudocrypturus cercanaxius – type locality for species
• †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †Pseudolabis
  • †
• †
  • †
• 

  Fossilized skeleton of the Eocene protoceratid mammal Pseudoprotoceras
  †Pseudoprotoceras
  • †
  • † – type locality for species
  • †
• †
  • †
• †
  • † – or unidentified comparable form
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †Psilota
  • † – type locality for species
• 

  Life restoration of the Paleocene taeniodont mammal Psittacotherium
  †Psittacotherium
  • †
• Ptelea
  • †
• Pteris – or unidentified related form
  • †
• Pterocarya
  • †
  • †
  • †
• †
  • † – type locality for species
• †
  • †
• 

  Illustration of a fossilized skull of the Paleocene multituberculate mammal Ptilodus
  †Ptilodus
  • †Ptilodus fractus
  • †Ptilodus gnomus
  • †Ptilodus kummae
  • †Ptilodus mediaevus
  • †Ptilodus montanus – or unidentified comparable form
  • †Ptilodus tsosiensis – or unidentified comparable form
  • †Ptilodus wyomingensis – type locality for species
• †
  • † – type locality for species
• Puma
  • †Puma concolor
• Pupilla – or unidentified comparable form
• †Pyramidula
  • †
• †Pyrocyon
  • †