This list of the prehistoric life of Iowa contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Iowa.

Precambrian

The Paleobiology Database records no known occurrences of Precambrian fossils in Alabama.

Paleozoic

Selected Paleozoic taxa of Iowa

• †Acidaspis

• 

  †Actinocrinites
  • †Actinocrinites gibsoni
  • †Actinocrinites lowei
• †Agassizodus
  • †Agassizodus variabilis
• †Aglaocrinus
• †Amplexus
• †Anataphrus
• †Anomphalus
• †Archaeogastropod
• †Arctinurus
• †Athyris
  • †Athyris fultonensis – or unidentified comparable form

• 

  †Atrypa
  • †Atrypa reticularis
  • †Atrypa reticularus
• †Aviculopecten
• †Bellerophon
• †Bembexia
• †Bothriocidaris
• †Bumastus
• †Calymene
• †Camarotoechia
  • †Camarotoechia chouteauensis
  • †Camarotoechia tuta
• †Cardiola
• †Catenipora
• †Ceratocephala
• †Ceratopsis
• †Ceraurus
• †Charactoceras

• 

  †Cheirurus
• †Chomatodus
  • †Chomatodus inconstans
• †Chonetes
  • †Chonetes glenparkensis
  • †Chonetes illinoisensis
  • †Chonetes logani
  • †Chonetes multicosta
  • †Chonetes ornatus
• †Cleiothyridina
  • †Cleiothyridina incrassata – or unidentified comparable form
  • †Cleiothyridina sublamellosa
• †Climacograptus
• †Coenites

• 

  †Composita
  • †Composita humilis – tentative report
  • †Composita trinuclea
• †Conocardium
• †Coolinia
• †Cornulites
• †Crania
• †Crotalocrinites
• †Curtognathus
• †Cyathocrinites
• †Cyclonema
• †Cyphaspis
• †Cypricardinia
• †Cyrtolites

• 

  †Cyrtospirifer
  • †Cyrtospirifer whitneyi
• †Cystodictya
• †Dalmanites
• †Decadocrinus
• †Deiphon
• †Deltaherpeton – type locality for genus
• †Dentalium
• †Dicoelosia
• †Dimerocrinites
• †Diplograptus
  • †Diplograptus modestus – or unidentified comparable form
• †Discosorus
• †Earlandia

• 

  †Edestus
• †Edmondia
• †Eldredgeops
  • †Eldredgeops rana
• †Ellesmeroceras
• †Encrinurus
• †Endoceras
• Eocaudina
• †Eodictyonella
• †Eophacops
• †Eospirifer
  • †Eospirifer radiatus
• †Eucalyptocrinites
• †Euomphalus
• †Favosites
• †Fenestella

• 

  †Flexicalymene
• †Goniatites
• †Gravicalymene
• †Greenops
• †Grewingkia
• †Gyroceras
• †Hallopora
• †Halysites
• †Harpidium
• †Heliophyllum
• †Hexagonaria
• †Hindia
• †Holopea
• †Huronia
• †Hyolithes
• †Icriodus
• †Idiognathodus

• 

  †Iniopteryx
  • †Iniopteryx rushlaui
• †Iocrinus
• †Isotelus
• †Kayoceras
• †Kionoceras
• †Krausella
• †Leptopora
• †Lingula
• †Manticoceras
• †Marsupiocrinus

• 

  †Meristella
• †Meristina
• †Michelia
• †Michelinoceras
• †Murchisonia
• †Mycterops
• †Mystrocephala
• †Naticopsis
  • †Naticopsis depressa – type locality for species
• †Neospirifer
• Nucula
• †Odontopleura

• 

  †Onychodus
• †Orthoceras
• †Oulodus
• †Ozarkodina
• †Pachyphyllum
• †Paladin
• †Palmatolepis
• †Peachocaris
• †Pentamerus
• †Pentremites
• †Periechocrinus

• 

  †Petalodus
• †Phacops
• †Phillipsia
• †Pinnocaris
• †Plaesiomys
• †Platyceras
• †Platycrinites
• †Platystrophia
• †Plectodonta
• †Pleurocystites
• Pleurotomaria – tentative report
• †Plicochonetes
• †Poleumita
• †Polygnathus
  • †Polygnathus parawebbi
  • †Polygnathus xylus
• †Posidonia
• †Proetus

• 

  †Ptyctodus
• †Rhynchodus
• †Rigidella
• †Scutellum
• †Scytalocrinus
• †Septemchiton
• †Sigournea – type locality for genus
  • †Sigournea multidentata – type locality for species
• †Similodonta
• †Skenidioides – tentative report
• †Sowerbyella
• †Sphenothallus
• †Spirifer
  • †Spirifer louisianensis
• †Spiriferina
• Spirorbis
• †Spyroceras

• 

  †Stethacanthus
• †Streptognathodus
• †Strophomena
  • †Strophomena costata
  • †Strophomena erratica
• †Stylonema – tentative report
• †Syringopora
• †Taxocrinus
• †Tranodis
• †Whatcheeria – type locality for genus
• †Worthenia
• †Youngia

Mesozoic

• †Arcellites
  • †Arcellites crillensis – type locality for species
  • †Arcellites disciformis
• †Balmeisporites
  • †Balmeisporites auriculata – type locality for species
• †Chrysotheca
  • †Chrysotheca dakotaensis – type locality for species
  • †Chrysotheca diskoensis
  • †Chrysotheca levis
• Coptothyris
  • †Coptothyris dakotaensis – type locality for species
• †Dunveganoceras
  • †Dunveganoceras pondi

• 

  †Inoceramus
  • †Inoceramus ginterensis
  • †Inoceramus perfragilis
  • †Inoceramus prefragilis
• †Metengonoceras
  • †Metengonoceras acutum
• †Microcarpolithes
  • †Microcarpolithes hexangulata
• †Minerisporites
  • †Minerisporites mirabilis
• †Molaspora – type locality for genus
  • †Molaspora lobata
  • †Molaspora rugosa – type locality for species
• †Perotrilites
  • †Perotrilites bursatus – type locality for species
  • †Perotrilites convolutus – type locality for species
• †Pilularia
  • †Pilularia globulifera
• †Regnellidium
  • †Regnellidium diphyllum
• †Spermatites
  • †Spermatites ellipticus
  • †Spermatites elongatus

Cenozoic

• Blarina

• 

  †Camelops
• Canis
  • †Canis latrans
  • †Canis lupus
• Castor
  • †Castor canadensis
• †Castoroides
  • †Castoroides ohioensis
• Didelphis
• Equus
• †Euceratherium – tentative report
  • †Euceratherium collinum
• Geomys
• Lepus
• Lontra
  • †Lontra canadensis
• †Mammut
  • †Mammut americanum
• †Mammuthus

  • 

    †Mammuthus primigenius
• †Megalonyx
  • †Megalonyx jeffersonii
• Microtus
  • †Microtus paroperarius
• Mictomys
  • †Mictomys meltoni
• Odocoileus
• Ondatra
• Panthera
• †Paramylodon
  • †Paramylodon harlani
• †Platygonus
• Procyon
• Rangifer
• Sciurus
• Sorex
  • †Sorex dispar – or unidentified comparable form

• 

  †Stegomastodon
  • †Stegomastodon aftoniae – type locality for species
• Sylvilagus
• Taxidea
  • †Taxidea taxus
• Ursus
  • †Ursus americanus
• Vulpes