List of the Paleozoic life of Iowa

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

A[]

  • Acidaspis
  • Fossilized calyx and partial stem of the Devonian-Permian crinoid ("sea lily") Actinocrinites
    Actinocrinites
    • Actinocrinites gibsoni
    • Actinocrinites lowei
  • – tentative report
  • Agassizodus
    • Agassizodus variabilis
  • Aglaocrinus
  • Allenella
    • – or unidentified comparable form
  • Amplexus
  • Anataphrus
    • – type locality for species
  • Anomphalus
    • – type locality for species
  • Archaeogastropod
  • Fossil of the Silurian trilobite Arctinurus
    Arctinurus
    • – tentative report
    • – type locality for species
  • Athyris
    • Athyris fultonensis – or unidentified comparable form
  • Atrypa
    • – type locality for species
    • – type locality for species
    • – type locality for species
  • Aviculopecten
    • – or unidentified comparable form

B[]

    • – type locality for species
  • Beecheria
  • Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
    Bellerophon
  • – tentative report
  • Bembexia
    • – type locality for species
  • Bobbodus
  • Reconstructive diagram (left) of a fossil (right) of the Ordovician sea urchin Bothriocidaris. The short spines which were attached to the tubercles are not drawn.
    Bothriocidaris
    • – type locality for species
    • – or unidentified comparable form
  • Life restoration of the Early Ordovician-Silurian trilobite Bumastus
    Bumastus
  • – tentative report

C[]

  • – tentative report
  • Fossil of the Early Ordovician-Early Devonian trilobite Calymene
    Calymene
  • Camarotoechia
    • Camarotoechia chouteauensis
    • Camarotoechia tuta
  • Cardiola
  • Fossil of the Ordovician-Silurian tabulate coral Catenipora
    Catenipora
  • Ceratocephala
  • Ceratopsis
  • Ceraurus
  • Charactoceras
  • Fossil of the Cambrian-Middle Devonian trilobite Cheirurus
    Cheirurus
  • Chomatodus
    • Chomatodus inconstans
  • Chonetes
    • Chonetes glenparkensis
    • Chonetes illinoisensis
    • Chonetes logani
    • Chonetes multicosta
    • Chonetes ornatus
    • – type locality for species
  • Cleiothyridina
    • – or unidentified related form
    • – or unidentified comparable form
    • Cleiothyridina incrassata – or unidentified comparable form
    • Cleiothyridina sublamellosa
  • Assemblage of fossils of the Cambrian graptolite Climacograptus
    Climacograptus
  • – tentative report
  • Coenites
  • Composita
    • Composita humilis – tentative report
    • – or unidentified comparable form
    • Composita trinuclea
    • – or unidentified comparable form
  • Conocardium
  • Coolinia
  • Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites
    Cornulites
  • Crania
    • – or unidentified related form
    • – informal
  • Fossilized stem segments of the Silurian crinoid ("sea lily") Crotalocrinites
    Crotalocrinites
  • Crurithyris
    • – or unidentified related form
    • – or unidentified related form
  • Curtognathus
  • Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites
    Cyathocrinites
    • – or unidentified comparable form
  • Cyclonema
  • Cyphaspis
  • Cypricardinia
  • Cyrtolites
  • Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer
    Cyrtospirifer
    • Cyrtospirifer whitneyi
  • Cystodictya

D[]

    • – or unidentified comparable form
  • Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
    Dalmanites
  • Decadocrinus
    • – type locality for species
    • – type locality for species
    • – type locality for species
    • – or unidentified comparable form
    • – or unidentified comparable form
  • Life restoration of two species of the Silurian trilobite Deiphon
    Deiphon
  • Delocrinus
  • Deltaherpeton – type locality for genus
    • – type locality for species
  • – tentative report
    • – or unidentified related form
  • Shell of a Dentalium tusk shell
    Dentalium
  • Dicoelosia
  • Dictyoclostus
    • – type locality for species
  • Dimerocrinites
  • Cambrian graptolite Diplograptus
    Diplograptus
    • Diplograptus modestus – or unidentified comparable form
  • Diplophyllum
  • Discosorus
    • – type locality for species
    • – type locality for species
  • Dolerorthis
  • Donaldina – tentative report
    • – type locality for species

E[]

  • Earlandia
  • Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus
    Edestus
    • – type locality for species
  • Eldredgeops
    • Eldredgeops rana
  • Ellesmeroceras
    • – report made of unidentified related form or using admittedly obsolete nomenclature
  • Encrinurus
  • Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras
    Endoceras
  • Endothyra
    • – tentative report
  • Eocaudina
    • – type locality for species
    • – type locality for species
  • Eodictyonella
  • Eophacops
  • Eospirifer
    • Eospirifer radiatus
    • – or unidentified comparable form
  • Eridotrypa
  • Fossilized calyx of the Silurian-Middle Devonian crinoid ("sea lily") Eucalyptocrinites
    Eucalyptocrinites
    • – or unidentified comparable form
  • Fossilized shell of the Silurian-Permian sea snail Euomphalus
    Euomphalus
  • Euphemites

F[]

  • – tentative report
  • Favosites
  • Fenestella
  • Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene
    Flexicalymene

G[]

    • – type locality for species
    • – type locality for species
    • – type locality for species
    • – type locality for species
  • Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites
    Goniatites
  • Goniophyllum
  • Gravicalymene
  • Greenops
  • Multiple views of a fossil of the Ordovician horn coral Grewingkia
    Grewingkia
  • Gyroceras

H[]

  • Fossil of the Ordovician bryozoan ("moss animal") Hallopora
    Hallopora
    • – type locality for species
  • Halysites
  • – tentative report
  • Harpidium
    • – or unidentified related form
  • Heliolites
  • Fossil of the Middle Devonian horn coral Heliophyllum
    Heliophyllum
  • Hemiphragma
  • Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone
    Hexagonaria
  • Hindia
    • – tentative report
  • Fossilized shells of the Ordovician-Carboniferous sea snail Holopea
    Holopea
  • Huronia
Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha

Hyolithes

I[]

    • – type locality for species
  • Icriodus
    • – type locality for species
    • – type locality for species
  • Idiognathodus
    • – type locality for species
    • – type locality for species
  • Life restoration of the Carboniferous Chimaera relative Iniopteryx
    Iniopteryx
    • Iniopteryx rushlaui
  • Iocrinus
  • Fossil of the Middle-Late Ordovician giant trilobite Isotelus.
    Isotelus

J[]

K[]

  • Kayoceras
  • Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
    Kionoceras
    • – type locality for species
  • – tentative report
    • – type locality for species
    • – type locality for species
  • Krausella

L[]

  • – type locality for genus
    • – type locality for species
  • Laevidentalium
  • – tentative report
  • Leiorhynchus
  • – or unidentified related form
  • Leptaena
  • Leptopora
    • – type locality for species
  • – tentative report
  • Lichenalia
  • Shell of the Cambrian-modern brachiopod Lingula
    Lingula
    • – or unidentified comparable form
  • Linoproductus
    • – or unidentified comparable form
  • – tentative report

M[]

    • – type locality for species
    • – type locality for species
    • – or unidentified comparable form
  • Fossilized shell of the Devonian ammonoid cephalopod Manticoceras
    Manticoceras
  • Marsupiocrinus
  • Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella
    Meristella
  • Meristina
  • – or unidentified comparable form
  • Mesolobus
    • – type locality for species
  • Michelia
  • Michelinoceras
  • – type locality for genus
    • – type locality for species
  • Murchisonia
  • Mycterops
    • – type locality for species
    • – or unidentified comparable form

N[]

  • – tentative report
  • – type locality for genus
    • – type locality for species
  • Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
    Naticopsis
    • Naticopsis depressa – type locality for species
  • Neospirifer
  • Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
    Nucula
  • Nuculana

O[]

  • Odontopleura
  • Life restoration of the Middle-Late Devonian lobe-finned fish Onychodus
    Onychodus
  • Opoa
    • – type locality for species
  • Orthoceras
  • – tentative report
  • Oulodus
    • – type locality for species
  • Ozarkodina
    • – type locality for species

P[]

  • Pachyphyllum
    • – type locality for species
  • Paladin
  • Palmatolepis
  • Fossil of the Carboniferous crustacean Peachocaris
    Peachocaris
    • – type locality for species
  • Fossilized shell of the Silurian-Middle Devonian brachiopod Pentamerus
    Pentamerus
  • Pentremites
    • – type locality for species
  • Periechocrinus
  • Fossilized tooth of the Carboniferous-Permian shark Petalodus
    Petalodus
  • Phacops
  • Phillipsia
    • – type locality for species
  • Pinnocaris
    • – type locality for species
  • Fossilized shell of the Ordovician brachiopod Plaesiomys
    Plaesiomys
  • – type locality for genus
    • – type locality for species
  • Platyceras
    • – tentative report
  • Three fossilized calyces of the Devonian-Permian crinoid ("sea lily") Platycrinites
    Platycrinites
    • – type locality for species
  • Platystrophia
  • Plectodonta
  • Fossil of the Late Ordovician cystoid echinoderm Pleurocystites
    Pleurocystites
    • – tentative report
  • Pleurotomaria – tentative report
  • Plicochonetes
  • Poleumita
  • Various conodont elements of Polygnathus
    Polygnathus
    • Polygnathus parawebbi
    • Polygnathus xylus
  • Polytylites
    • – type locality for species
  • Posidonia
  • – tentative report
  • Prasopora
  • – tentative report
  • – tentative report
  • Productus
  • Restoration of the Silurian trilobite Proetus
    Proetus
    • – or unidentified comparable form
    • – or unidentified related form
    • – or unidentified comparable form
  • – tentative report
    • – or unidentified comparable form
  • – type locality for genus
    • – type locality for species
  • Life restoration of the Late Devonian placoderm fish Ptyctodus
    Ptyctodus
  • Pugnoides
    • – type locality for species

Q[]

R[]

Life restoration of the Middle Devonian placoderm fish Rhamphodopsis
    • – informal
  • Rhipidomella
    • – or unidentified comparable form
  • Rhombopora
  • Rhynchodus
  • Rigidella

S[]

  • Schizodus
  • Schizophoria
    • – or unidentified related form
    • – or unidentified related form
  • Scutellum
  • Fossilized calyx of the Carboniferous crinoid ("sea lily") Scytalocrinus
    Scytalocrinus
  • Septemchiton
  • Septopora
    • – type locality for species
  • – tentative report
  • Sigournea – type locality for genus
    • Sigournea multidentata – type locality for species
  • Similodonta
  • Skenidioides – tentative report
  • Sowerbyella
  • Fossilized holdfast of the Cambrian-Carboniferous conulariid Sphenothallus
    Sphenothallus
    • – or unidentified comparable form
    • – or unidentified comparable form
  • Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
    Spirifer
    • Spirifer louisianensis
  • Spiriferina
  • Spirorbis
  • Spyroceras
    • – type locality for species
    • – or unidentified comparable form
    • – type locality for species
  • Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
    Stethacanthus
    • – type locality for species
    • – or unidentified comparable form
  • Streptognathodus
    • – type locality for species
    • – type locality for species
  • Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
    Strophomena
    • Strophomena costata
    • Strophomena erratica
    • – type locality for species
  • Stylonema – tentative report
  • Fossil of the Devonian tabulate coral Syringopora
    Syringopora
  • – tentative report

T[]

  • Tabulophyllum
    • – type locality for species
    • – type locality for species
    • – type locality for species
    • – type locality for species
    • – informal
    • – type locality for species
  • Fossil of the Silurian-Carboniferous crinoid ("sea lily") Taxocrinus (right)
    Taxocrinus
  • Tranodis
    • – type locality for species

U[]

    • – or unidentified comparable form

V[]

  • – tentative report

W[]

    • – tentative report
  • Whatcheeria – type locality for genus
    • – type locality for species
  • Worthenia

Y[]

Z[]

References[]

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