List of the Paleozoic life of Utah

This list of the Paleozoic life of Utah contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Utah and are between 541 and 252.17 million years of age.

A[]

• †
  • †
  • †
• †
  • † – or unidentified comparable form
  • †
• †
  • † – or unidentified comparable form
  • †
  • †
  • †
  • † – type locality for species
  • †
  • † – type locality for species
• †Acinocricus
  • †Acinocricus stichus
• †Acodus
  • †
• †
  • †
• †
  • †
• †
• †
  • †
• †
  • † – type locality for species
• 

  Assemblage of fossils of the Cambrian trilobite Agnostus
  †Agnostus
  • †
• †
• †
• †
  • †
  • †
  • †
  • †
  • †
• †
  • †
• †
  • †
  • †
• †
  • †
  • † – type locality for species
  • †
• †
  • †
• †Ameura – tentative report
• †
  • †
• †Amphiscapha
• †
  • †
  • †
  • †
• †
• †Amplexus^{[clarification needed]}
• †
  • † – or unidentified comparable form
• †
  • † – or unidentified related form
• †
  • † – type locality for species
• †
  • †
• †
• †
  • †
• †
  • †
• †Anisopyge
• †
• †Annularia
  • †Annularia stellata
• † – type locality for genus
  • † – type locality for species
• 

  Restorative model of the Cambrian arthropod Anomalocaris
  †Anomalocaris
  • †
• †
  • †
  • †
  • †
• †Anomphalus
  • †
• †
• †
  • †
  • †
  • †
• †
  • †
  • † – or unidentified comparable form
• †
• †
• †
  • †
• †
  • †
• †
  • † – or unidentified comparable form
• †
  • † – or unidentified comparable form
• †
  • †
• † – tentative report
  • † – type locality for species
• †
  • †
• †
  • †
• †
• 

  Fossils of the Carboniferous-Permian bryozoan Archimedes
  †Archimedes
  • †Archimedes macfarlani
  • †
• †Arcuolimbus
• †Arenicolites
• †
  • † – type locality for species
• † – tentative report
• †Artisia
• †
• † – tentative report
• 

  Fossil of the Cambrian trilobite Asaphiscus
  †Asaphiscus
  • †Asaphiscus wheeleri
• †
  • †
• †
  • †
• †
  • †
  • †
  • †
• †
  • †
  • †
• †
• †Athyris
  • †Athyris lamellosa
• 

  Fossilized shell of the Late Ordovician-Carboniferous brachiopod Atrypa
  †Atrypa
  • †
  • †Atrypa parva – or unidentified comparable form
• †Atrypid
• † – tentative report
  • †
  • †
• †
  • †
  • †
• †Aulopora – tentative report
• †Aviculopecten
  • †Aviculopecten girtyi
  • †Aviculopecten kaibabensis – or unidentified comparable form
• †
  • † – tentative report
• 

  Fossil of the Cambrian velvet worm relative Aysheaia
  †Aysheaia

B[]

• †
  • †
• †
• †
  • †
• † – tentative report
• †
  • †
• †
  • †
  • †
  • †
  • † – type locality for species
• †Bathyuriscus
  • †
  • †
  • †
  • †
• †
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • †
• †Beckwithia
  • †
• †
  • † – type locality for species
• †
  • †
  • † – type locality for species
• †
  • †
  • †
  • †
• †Benthamaspis
  • †
  • † – type locality for species
  • †
• †Beyrichoceras
• †
• †
• †Biscoia
• †
  • † – or unidentified comparable form
• †
• †
  • †
  • †
  • † – informal
  • †
• †Bolbocephalus
• †
  • † – type locality for species
• †Bonneterrina
• †Bourbonnella
  • † – type locality for species
• †Bowmania
• †
  • †
  • †
• †
  • †
• †
• 

  Life restoration of the mysterious Cambrian animal Branchiocaris
  †Branchiocaris
  • †
• †Brassicicephalus
• †
  • †
• †
  • † – type locality for species
• †
• †
• †
• †
  • †

C[]

• †
  • †
• 

  Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
  †Calamites
  • †Calamites cistii – or unidentified comparable form
  • †
  • †
  • †
  • †
  • †Calamites suckowii
• † – tentative report
• †Calathium
  • † – type locality for species
• †Callipteris – tentative report
• †Callocladia
  • †
• †
• †
  • †
  • † – type locality for species
• †Camarotoechia
• † – type locality for genus
  • † – type locality for species
• †
• †Campbelloceras – tentative report
• 

  Life restoration of the Cambrian arthropod Canadaspis (left)
  †Canadaspis
  • †Canadaspis perfecta – or unidentified comparable form
• †Canadia
• †
• †
  • † – or unidentified comparable form
• †
  • †
• †Caninia
  • †
• †
• †
  • †
• †
• †Cardiopteris
  • † – or unidentified comparable form
• †Carolinites
  • †
  • † – type locality for species
  • †
  • †
• †
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • †
• †Cavusgnathus
  • †
  • †
• 

  Fossil of the Cambrian trilobite Cedaria
  †Cedaria
  • †
• † – tentative report
• †
  • † – informal
• †
  • †
• †
• †Chaetetes
  • †
• †Chancelloria
  • †
  • † – type locality for species
• †Chancia (genus)
  • † – or unidentified comparable form
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †
• †
• 

  Life restoration of the Cambrian sponge Choia
  †Choia
  • †
  • †
  • †
  • †
• †Chondrites
• †Chonetes
• †
  • †
• †
  • † – or unidentified comparable form
  • † – or unidentified comparable form
• 

  Fossil of the Carboniferous tabulate coral Cladochonus
  †Cladochonus
• † – tentative report
• †
  • †
• †Cleiothyridina
  • † – informal
  • † – informal
• †
  • †
• †
  • †
• †Clonograptus
• †
• †Coenites
• †
  • †
• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita
  †Composita
  • †
  • †Composita mira
  • †Composita ovata
  • †Composita parasulcata
  • †Composita plana
  • †Composita subtilita
  • †
  • †Composita trinuclea
• †
  • †
• †
  • †
• †Coosella
• †Coosina
• †
  • †
• †Cordaicarpus
  • † – type locality for species
  • †
  • †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• 

  Fossilized foliage of the Carboniferous-Permian conifer relative Cordaites
  †Cordaites
  • †
  • †Cordaites principalis
  • † – informal
  • † – informal
• †
  • † – type locality for species
• †
  • †
• †
• †
• Crania
  • †
• †Cravenoceras
• †Crepicephalus
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
• †Crurithyris
  • † – or unidentified comparable form
  • † – tentative report
• †Cruziana
• †
  • †
• †
  • †
• 

  Restoration of the Permian synapsid (mammal precursor) Ctenospondylus
  †Ctenospondylus
  • † – or unidentified related form
• †
• †
  • †
  • †
• †
• †Cybelopsis
  • †
• 

  Fossilized foliage from the Carboniferous seed fern Cyclopteris
  †Cyclopteris
  • †
• †
  • †
• †
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
• †
• †
• †Cystodictya
  • †

D[]

• †
• †Deiracephalus
• †
  • †
• †Delocrinus
  • †
• † – type locality for genus
  • † – type locality for species
• Dentalium
• †
  • †
  • †
  • †
  • †
• †
  • †
• †
  • † – type locality for species
• 

  Life restoration of the Permian reptile relative Diadectes
  †Diadectes
• †Diagoniella
  • †
  • †
  • † – type locality for species
  • † – type locality for species
• †Diaphragmus
  • †
• †
  • †
• †
  • †
• †Dictyoclostus
  • †
  • †
• †Dictyonema
  • † – or unidentified comparable form
• 

  Fossil of the Middle Ordovician graptolite Didymograptus
  †Didymograptus
  • †
  • †
  • †Didymograptus nitidus – or unidentified comparable form
• †
  • †
  • †
  • †
• †
• †Dimeropygiella
  • †
  • † – type locality for species
  • †
  • †
  • †
• †
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
• †
  • † – or unidentified comparable form
  • †
  • † – or unidentified comparable form
• †
• †
  • †
• †Diplorrhina
  • †
• †
  • †
  • †
  • †
• † – tentative report
• †Ditomopyge
• †Dolerorthis – tentative report
  • †
• †Donaldina
• †
  • †
  • †
• †
  • †
• †Dresbachia
  • †
• †
  • †
• † – tentative report
• †
  • †
  • † – tentative report
• †
  • † – informal
• †
• †
• †

E[]

• †
  • † – informal
• †Echinaria^{[clarification needed]}
  • † – or unidentified related form
• † – or unidentified comparable form
  • †
• †
  • †
  • †
• †
• †
  • †
  • †
• 

  Life restoration of the Permian lobe-finned fish Ectosteorhachis
  †Ectosteorhachis – or unidentified related form
  • †
• †
• †Ehmaniella
  • † – tentative report
• †
  • †
• †
  • †
  • †
• †Eldonia
  • †
• †Eleutherocentrus
  • †
• †
• 

  Fossils at different stages of development of the Cambrian trilobite Elrathia
  †Elrathia
  • †
• †
  • † – type locality for species
• †Elrathina
  • †
• †
• †Emeraldella
• †
  • †
• †Endoceras
• †
  • †
  • †
  • † – type locality for species
• †
  • †
• †
• †
• † – type locality for genus
  • † – type locality for species
• †
• †Eridotrypa
  • †
  • †
• †
  • †
• 

  Life restoration of the Carboniferous-Permian amphibian Eryops
  †Eryops
• †
• † – type locality for genus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• † – report made of unidentified related form or using admittedly obsolete nomenclature
  • †
• †
  • †
  • †
• †Euphemites
  • †
• †
  • † – type locality for species
• †Euptychaspis
• †
• †
  • † – or unidentified comparable form
  • † – type locality for species

F[]

• †
• †Falcatamacaris – type locality for genus
  • † – type locality for species
• †Fenestella
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
  • †
• †
  • †
• †
• †
• †Forteyops
  • † – type locality for species
• †Fusulinella

G[]

• †
• †
  • †
• 

  Fossil of the Cambrian trilobite Genevievella
  †Genevievella
  • †
• † – tentative report
• †
  • † – type locality for species
  • †
  • † – type locality for species
• †
• †
• †Girvanella
• †
  • †
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• †
• †
  • †
  • †
  • †
  • †
  • †
• †
  • † – type locality for species
• †
• †Gnathodus
  • †
• †
  • †
• 

  Fossil of the Cambrian echinoderm Gogia
  †Gogia
  • †
  • †
  • †
  • †
• †
  • † – type locality for species
  • †
• †
• †Goniatites
  • †
  • † – type locality for species
  • †
  • †
• †
  • †
• †
  • †
• †
  • †
  • † – type locality for species
• † – tentative report
  • †
• †
• †
  • †
• †
  • †
• † – or unidentified comparable form
  • † – informal
• † – tentative report
• † – tentative report
  • † – or unidentified comparable form
• †
  • † – type locality for species
• †Gunterichthys – type locality for genus
  • † – type locality for species

H[]

• †
  • †
• †
  • † – type locality for species
• †Hamptonia
  • †
  • † – type locality for species
• †
  • †
• 

  Life restoration of the Cambrian brachiopod relative Haplophrentis
  †Haplophrentis
  • †
  • †
• †
• †Hazelia
  • †
• †
  • † – type locality for species
  • † – type locality for species
  • † – type locality for species
  • †
  • † – type locality for species
  • †
  • † – type locality for species
• †
  • †
• 

  Life restoration of the Permian Chimaera relative Helicoprion
  †Helicoprion
• †
• †Hematites
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †Hemirhodon
  • †
• †Hemitrypa
  • †
• †
  • †
  • †
  • †
• †
  • †
• †
• †
  • † – or unidentified comparable form
• †
  • †
  • † – or unidentified comparable form
• †Hindia^{[clarification needed]}
  • †
• †
  • †
• †Hintzeia
  • †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †
• †Homagnostus
• †
• † – tentative report
• †
• †
• † – tentative report
• †Huronia
  • †
• †
  • †
  • † – type locality for species
• † – tentative report
• †Hyolithellus

Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha

†Hyolithes

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

I[]

• †
• †
  • †
• †
  • † – type locality for species
• †
• †Idiognathodus
• †
• †
• 

  Fossil of the Middle Ordovician trilobite Illaenus
  †Illaenus
  • †
• †
  • †
• †
• †Irvingella^{[clarification needed]}
  • † – tentative report
  • †
• †
  • †
  • †
• †
• †
  • †
  • †
• †

J[]

• †Jeffersonia
• †
  • †
• †Juresania
  • †

K[]

• †
• †Kanoshia
  • † – type locality for species
  • †
  • †
• †
  • †
• †Kawina
  • †
  • †
• †
  • † – type locality for species
• †
  • †
• †Kingstonia
• †Kirkella^{[clarification needed]}
  • †
• †
  • †
• †
  • †
• †
• †Komia^{[clarification needed]}
• †
  • †
• 

  Fossil of the Cambrian trilobite Kootenia
  †Kootenia
  • †
  • †
  • †
  • †
• †
  • †
• †
  • †
  • †
• †
• †
  • † – or unidentified related form
• †
  • †
• †
  • †

L[]

• †Lachnostoma
  • † – type locality for species
• †
  • † – type locality for species
• †
• †
  • † – type locality for species
• †
  • †
  • †
• 

  Life restoration in multiple views of the Cambrian arthropod Leanchoilia
  †Leanchoilia
  • †
  • †
• †
• †
• †Leiorhynchus
• †
  • †
  • † – or unidentified comparable form
  • †
• †Lejopyge
  • †
• †
  • †
• †
  • †
• 

  Life restoration of the Carboniferous tree-sized club moss relative Lepidodendron
  †Lepidodendron
  • †Lepidodendron aculeatum
  • †Lepidodendron obovatum
  • †
• †
• †Lepidophyllum
  • †
• †
  • †
• †Lepidostrobus
  • †
  • †
• †Leptaena
• †
  • † – or unidentified comparable form
• †
• †
  • † – type locality for species
• †Leptomitus
• † – tentative report
• †
  • † – tentative report
  • †
• Lima^{[clarification needed]}
• †
• Limatula
• †
• †
  • †
• Lingula
  • †
• 

  Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella
  †Lingulella
  • †
  • † – or unidentified comparable form
• †
  • †
• †
• †
  • †
  • †
• †Linoproductus
  • †
  • †
  • † – tentative report
  • †
  • †
• †
  • †
• †
• †
  • † – or unidentified comparable form
• †Llanoaspis
• † – type locality for genus
  • † – type locality for species
• †Lochriea
  • †
• †Lonchocephalus
• †
  • †
• †
• †
• †
  • †
  • †
• †Lyracystis
  • †

M[]

• †
• †
• †
• †
  • †
• 

  Restoration of the mysterious Cambrian life-form Margaretia
  †Margaretia
  • †Margaretia dorus
• †Marginifera
• †
  • †
• †
  • †
• †
  • † – type locality for species
• †Marpolia
• †
• †Matthevia
  • †
  • † – type locality for species
• †
• †
• †
  • †
• †
  • †
• †
  • † – type locality for species
  • †
• 

  Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
  †Metacoceras
• †
  • † – type locality for species
  • †
• † – tentative report
• †Meteoraspis
• †
• †
• †Micromitra
  • †
• †
  • † – type locality for species
  • †
  • † – type locality for species
• †
• Modiolus – report made of unidentified related form or using admittedly obsolete nomenclature
• †
  • †
  • †
  • †
  • † – type locality for species
• †Mollisonia
  • †
• †Morania
  • †
• †
  • † – type locality for species
• †

N[]

• †
  • †
  • †
• 

  Restoration of the Cambrian-Silurian arthropod Naraoia
  †Naraoia
  • †
• †
  • †
• †
  • † – tentative report
• †Naticopsis
• †
• †
  • †
• †
  • † – type locality for species
  • † – type locality for species
  • †
• †
  • †
  • †
• 

  Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer
  †Neospirifer
  • †Neospirifer cameratus
  • †Neospirifer kansasensis
  • †Neospirifer triplicatus
• † – tentative report
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †
  • † – or unidentified comparable form
• 

  Fronds of the Carboniferous seed fern Neuropteris
  †Neuropteris
  • † – type locality for species
  • †Neuropteris gigantea
  • †Neuropteris heterophylla
• † – tentative report
• †Niobe^{[clarification needed]} – tentative report
• †Nisusia
• †Norwoodia
  • †
• †
• †
• †
• †Nuia
• †
  • † – type locality for species

O[]

• †Obolus^{[clarification needed]}
  • †
• †
  • † – or unidentified comparable form
  • † – or unidentified comparable form
• †
  • † – informal
• †
  • †
• 

  Fossil of the Cambrian trilobite Ogygopsis
  †Ogygopsis
  • †
• †
  • †
  • †
  • †
  • † – or unidentified related form
  • †
• †Olenellus
  • †
• †Olenoides
  • †
  • †Olenoides nevadensis
  • †Olenoides serratus
  • †
  • †
• 

  Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon
  †Ophiacodon
  • †Ophiacodon navajovicus
• †
• †
  • †
• †
  • †
  • †
  • † – type locality for species
• †
  • †
• †
  • † – or unidentified comparable form
  • †
  • †
• †Orthis
  • † – or unidentified comparable form
  • †
  • †
• †
  • † – or unidentified comparable form
• †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †Oryctocephalus
  • †
• †
  • † – type locality for species
• 

  Life restoration of the Cambrian priapulid worm relative Ottoia
  †Ottoia
  • †Ottoia prolifica
• †
  • †
• †
• †Ozarkodina

P[]

• †
  • †
• 

  Fossil of the Cambrian trilobite Pagetia
  †Pagetia
  • † – or unidentified comparable form
• †Paladin
• †
• Palaeoaplysina
  • †
• †
• †
  • †
• †Palaeoscolex
  • †
• †
• †
  • †
• †
  • †
• †
  • †
• †
• †
  • † – type locality for species
• †
  • †
  • †
• †
  • †
• †
• † – tentative report
• †
  • †
  • †
• †
  • †
• † – tentative report
• †Pelagiella
• †
  • †
  • †
• †
• †
• †Pentamerus
• †
• †
  • †
  • †
• 

  Assemblage of fossils of the Cambrian trilobite Itagnostus interstrictus, until recently known as Peronopsis interstricta
  †Peronopsis
  • †
  • †
  • †
  • †
  • †
  • †
  • †Peronopsis interstricta
  • †
  • †
  • †
  • †
• †Perspicaris
  • †
• †
  • † – informal
• †
  • †
• †
  • †
• †Phillipsia
• †
• †
  • † – informal
• †
• †Phyllograptus
• †
  • † – tentative report
• Pinna – report made of unidentified related form or using admittedly obsolete nomenclature
• †
• †Platycrinites
• †
  • † – or unidentified comparable form
• 

  Life restoration of the Carboniferous-Permian sail-backed amphibian Platyhystrix
  †Platyhystrix – or unidentified comparable form
  • †Platyhystrix rugosus
• †
• †
  • † – informal
  • † – informal
• †
• †
  • †
• †
  • †
• †
  • †
  • †
• †
  • †
• †
  • †
  • †
  • †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †
  • †
  • †
• †
  • †
  • †
  • †
• †
• †Prodentalium
  • †
• †
• †Productus – report made of unidentified related form or using admittedly obsolete nomenclature
• †
  • †
• †Prohedinia
  • †
• † – tentative report
  • †
• †
• †
  • † – type locality for species
• †Protopliomerella
  • †
• †
  • † – type locality for species
• †
  • †
• †
• †Protospongia
  • †
• †
• †
  • †
• †
  • †
  • †
  • †
  • †
• †
  • †
  • †
  • †
• †
• †
  • †
• †
  • †
• †
  • † – or unidentified related form
• †
  • †
  • †
  • † – type locality for species
• †
• †
• † – tentative report
  • †
• †
  • †
  • † – or unidentified comparable form
  • †
• †
  • †
• †
  • †
• †
  • †
  • †
  • †
• †
  • †
• †
• †
• † – tentative report
• †
• †
• †
• †Ptychagnostus
  • †
  • 

    Fossil of the Cambrian trilobite Ptychagnostus atavus
    †Ptychagnostus atavus
  • †
  • †
  • †
  • †
  • †
  • †
  • †
• †
• †
• †
  • †
  • †
• †
  • †
  • † – type locality for species
  • †
  • †
  • †
• †Pugnax^{[clarification needed]}
  • † – type locality for species
• †Pugnoides
• †
  • †
  • †
• †Punka^{[clarification needed]}
  • † – or unidentified comparable form

Q[]

• †Quadratia
• † – tentative report
  • †
• †
  • † – informal

R[]

• †
• † – tentative report
• †
• † – type locality for genus
  • † – type locality for species
  • †
  • † – type locality for species
• †Rayonnoceras
  • †
• 

  Fossil of the Early Ordovician-Permian benthic alga Receptaculites
  †Receptaculites
  • †
  • †
  • †
• †
  • †
• †
  • †
• †
  • † – type locality for species
  • †
• †
  • †
• †
  • † – type locality for species
  • † – or unidentified comparable form
• †
  • †
• †Rhipidomella
  • †
• 

  Shell of a Rhodea land snail
  †Rhodea
  • †
• †Rhombopora
  • †
• †
• †Ribeiria
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • † – or unidentified comparable form
• †
  • †
• †
  • †
• †
  • †
• †
  • †
• 

  Fossil of the arthropod burrow ichnogenus Rusophycus
  †Rusophycus
• † – tentative report

S[]

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

  Fossil of the Cambrian-Ordovician trilobite Saukiella
  †Saukiella
• †
  • †
• † – tentative report
• †Scenella
  • †
• †
  • † – type locality for species
• †Schizodus
  • †
  • † – type locality for species
• †Schizophoria
• †Schmalenseeia
• †
  • †
• †Schwagerina
• †Scolicia
• †
  • †
  • †
  • †
  • †
• †
• † – type locality for genus
  • † – type locality for species
• 

  Fossil of the Cambrian priapulid worm Selkirkia
  †Selkirkia
  • †Selkirkia columbia – or unidentified comparable form
  • †
  • †
• † – tentative report
  • † – or unidentified comparable form
• †
  • † – tentative report
• †Septopora
  • †
• †
  • †
  • †
• †
  • †
• 

  Restorative model of the Cambrian arthropod Sidneyia
  †Sidneyia
• †Sigillaria
  • †Sigillaria brardii
• † – tentative report
• † – tentative report
• †
  • †
  • †
• †
  • † – type locality for species
  • †
• 

  Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Sphenacodon
  Sphenacodon
  • † – or unidentified comparable form
• † – tentative report
• †Sphenophyllum
  • †Sphenophyllum angustifolium
  • †Sphenophyllum verticillatum
• †
  • †
  • † – type locality for species
• †Sphenopteris
  • † – type locality for species
• †
  • †
• †
  • † – type locality for species
• †Spinofacia – type locality for genus
  • † – type locality for species
• 

  Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
  †Spirifer
  • †Spirifer centronatus
  • †Spirifer opimus
  • †
• †Spiriferina
• †
  • †
• Spirorbis
• †
• † – report made of unidentified related form or using admittedly obsolete nomenclature
• †
  • †
  • †
• †Stenopora
  • †
• †
  • †
• †Stenorhachis – tentative report
  • †
• † – type locality for genus
  • † – type locality for species
• 

  Fossil preserved in situ of a Carboniferous tree-like club moss relative with attached Stigmaria rhizome system
  †Stigmaria
  • †
• †
  • †
• † – or unidentified related form
  • †
• †
• †
• †
  • †
• †
  • †
• †
  • †
• †
• †
  • †
• †
  • †
• † – or unidentified related form
• †
• †Supaia
  • †
• †
  • † – or unidentified comparable form
  • †
  • †
  • † – or unidentified comparable form
  • †
  • †
• † – tentative report
• †
  • † – type locality for species
• †
  • † – or unidentified comparable form
  • †
• †
  • †
  • †
• 

  Fossil of the Devonian tabulate coral Syringopora
  †Syringopora
  • †
  • †
• †
  • †

T[]

• †Tabulipora
  • †
  • †
  • †
  • †
  • †
• †
• †
  • †
• 

  Fossil of the feeding trace ichnogenus Teichichnus
  †Teichichnus – tentative report
• †
  • †
• †Terranovella
• †
  • † – or unidentified comparable form
• † – type locality for genus
  • † – type locality for species
• †
  • †
• †Tetragraptus
  • † – or unidentified comparable form
• 

  Fossils of the burrow ichnogenus Thalassinoides
  †Thalassinoides – tentative report
• †
  • †
• † – or unidentified comparable form
  • † – tentative report
• †
• †
  • †
• †
  • † – type locality for species
• †
  • †
• †
  • †
  • †
• †
• † – tentative report
  • †
• †Trace
  • †Trace fossil
• †
  • †
  • †
• † – tentative report
• †
• †Tricrepicephalus
  • †
• †
  • †
• †
  • †
• †Trigonocercella
  • †
• 

  Illustration of a fossil of the Cambrian trilobite Trinodus
  †Trinodus
• †Triplagnostus
  • †
• †
  • †
  • †
  • †
• †Triticites
• †
  • †
  • †
• †Trocholites
• † – tentative report
• †
  • †
• 

  Restoration of the Permian reptile relative Tseajaia
  †Tseajaia
  • †Tseajaia campi – type locality for species
• †
  • † – type locality for species
• †
  • †
• †Tuzoia
  • †
  • †
  • †
• †
  • †

U[]

• †
• † – tentative report
• †
  • † – or unidentified comparable form
• †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
• 

  Life restoration of the Carboniferous amphibian Utaherpeton
  †Utaherpeton – type locality for genus
  • † – type locality for species
• †
  • †

V[]

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

  Fossil of the Cambrian-Silurian sponge Vauxia
  †Vauxia
  • †
  • †
  • † – type locality for species
• †
  • † – or unidentified comparable form
• †
• †
  • † – type locality for species
• †
  • † – or unidentified comparable form
• †
  • † – type locality for species

W[]

• †
  • † – informal
• †
• †
  • † – type locality for species
• †Walcottoceras – tentative report
  • †
• 

  Restoration of the Cambrian arthropod Waptia
  †Waptia
  • †Waptia fieldensis – or unidentified comparable form
• † – tentative report
• †Weeksina
  • †
• †
  • †
  • †
• †
  • †
• †Wilkingia
• †
• 

  Life restoration of the Cambrian possible mollusc Wiwaxia
  †Wiwaxia
  • †Wiwaxia corrugata
• †Worthenia

X[]

• 

  Restoration of the Late Devonian–Triassic freshwater shark Xenacanthus
  †Xenacanthus – or unidentified related form
  • †
• †
  • † – or unidentified comparable form
  • †
• †
  • †
• † – tentative report
  • †

Y[]

• † – tentative report
• †
  • †
• †
  • † – type locality for species
• †Yuknessia
  • †
• †

Z[]

• †Zacanthoides
  • †
  • †
  • †
  • †
  • †
  • †
• †
• †
  • †
• †
  • † – or unidentified comparable form
• †Zittelloceras

References[]

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021. {{cite web}}: |author= has generic name (help)