List of the Paleozoic life of Colorado

This list of the Paleozoic life of Colorado contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Colorado and are between 538.8 and 252.17 million years of age.

A

• †Acanthatia
  • †Acanthatia nupera
• †Acondylacanthus
  • †Acondylacanthus nuperus
• †Actinoceras
• †Adiantites
  • †Adiantites rockymontanus – type locality for species
• †Aglaocrinus
  • †Aglaocrinus magnus
• †Allumettoceras
• †Amorphognathus
  • †Amorphognathus ramosa
• †Amplexizaphrentis
  • †Amplexizaphrentis pamatus
• †Amplexus
• †Anthracoblattina
  • †Anthracoblattina triassica – type locality for species
• †Anthracospirifer
  • †Anthracospirifer tanoensis
• †Antiquatonia
  • †Antiquatonia coloradoensis
• †Araucarites
• †Archaeocidaris
  • †Archaeocidaris cratis
  • †Archaeocidaris ourayensis
  • †Archaeocidaris triplex
• †Asterophyllites
  • †Asterophyllites charaeformis
  • †Asterophyllites longifolius – tentative report

• 

  Life restoration of the Middle-Late Ordovician jawless fish Astraspis

  †Astraspis – type locality for genus
  • †Astraspis desiderata – type locality for species
• †Athyris
  • †Athyris coloradensis
  • †Athyris transversa
• †Aviculopecten

B

• †Beloitoceras
  • †Beloitoceras accultum
• †Blothrocrinus
• †Bucanella
• †Bythiacanthus

C

• 

  Fossilized stems from the Carboniferous-Permian horsetail relative Calamites

  †Calamites
  • †Calamites cistii
  • †Calamites cruciatus
  • †Calamites distachyus
  • †Calamites gigas
  • †Calamites kutorgae – tentative report
• †Calapoecia
• †Callipteris
  • †Callipteris lyratifolia – or unidentified comparable form
• †Camarotoechia
• †Caninia
• †Catactocrinus – tentative report
  • †Catactocrinus torus

• 

  Fossil of the Ordovician-Silurian tabulate coral Catenipora

  †Catenipora
  • †Catenipora robusta – or unidentified comparable form
• †Ceraurinus
  • †Ceraurinus icarus
• †Cercopyllis
  • †Cercopyllis adolescens – type locality for species
  • †Cercopyllis delicatula – type locality for species
  • †Cercopyllis justiciae – type locality for species
• †Charactoceras – tentative report
• †Chirognathus
  • †Chirognathus admiranda
  • †Chirognathus aequidentata
  • †Chirognathus alternata
  • †Chirognathus deformis
  • †Chirognathus delicatula
  • †Chirognathus dubia
  • †Chirognathus duodactyla
  • †Chirognathus duodactylus
  • †Chirognathus eucharis
  • †Chirognathus gradata
  • †Chirognathus idonea
  • †Chirognathus maniformis
  • †Chirognathus monodactyla
  • †Chirognathus multidens
  • †Chirognathus parallela
  • †Chirognathus plana
  • †Chirognathus tenuidentata
  • †Chirognathus unguliformis
  • †Chirognathus vulgaris
• †Coelosporella
• †Coleolus

• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita

  †Composita
  • †Composita gibbosa
  • †Composita ovata
• †Conocardium
• †Cordaianthus
• †Cordaicarpon
• †Cordaites
  • †Cordaites angulosostriatus
• †Cornulites
• †Cranaena
  • †Cranaena subelliptica
• †Crania
• †Ctenacanthus
  • †Ctenacanthus buttersi
  • †Ctenacanthus furcicarinatus
• †Ctenodonta
• †Cupressocrinites

• 

  Restoration of the Permian synapsid (mammal precursor) Cutleria

  †Cutleria – type locality for genus
  • †Cutleria wilmarthi – type locality for species
• †Cyclopteris
• †Cyrtiopsis
  • †Cyrtiopsis animasensis
  • †Cyrtiopsis conicula
  • †Cyrtiopsis kindlei
• †Cyrtodonta
• †Cyrtogomphoceras

• 

  Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer

  †Cyrtospirifer
  • †Cyrtospirifer animasensis
  • †Cyrtospirifer whitneyi

D

• †Dactylophyllum – type locality for genus
  • †Dactylophyllum johnsoni – type locality for species
• †Desmoinesia
  • †Desmoinesia nambeensis
• †Dicladoblatta
  • †Dicladoblatta marginata – type locality for species
• †Dicromyocrinus
  • †Dicromyocrinus beldenensis
• †Dictyoclostus
• †Dictyorhabdus
  • †Dictyorhabdus priscus
• †Diestoceras
• †Diplothmema
  • †Diplothmema patentissima
• †Distatoblatta
  • †Distatoblatta persistens – type locality for species

E

• †Echinosphaerites – tentative report

• 

  Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus

  †Edestus
  • †Edestus minor
• †Eireocrinus – tentative report
  • †Eireocrinus coloradoensis
• †Endoceras
• †Epheboblatta
  • †Epheboblatta attenuata – type locality for species
• †Ephippiorthoceras
• †Eretmocrinus
  • †Eretmocrinus sawdoi – type locality for species
• †Eriptychius – type locality for genus
  • †Eriptychius americanus – type locality for species
• †Erismodus
  • †Erismodus quadridactylus

• 

  Life restoration of the Carboniferous-Permian amphibian Eryops

  †Eryops
  • †Eryops grandis – or unidentified comparable form
• †Etoblattina
• †Eumetria – tentative report
• †Euomphalus
  • †Euomphalus eurekensis – or unidentified comparable form
• †Eusphenopteris

F

• †Floweria
  • †Floweria chemungensis
• †Floyda
  • †Floyda concentrica

G

• †Garwoodia
  • †Garwoodia media
• †Gilmocrinus – tentative report
  • †Gilmocrinus albus
• †Girvanella
  • †Girvanella nicholsoni
• †Glossites
• †Goleocrinus – tentative report
• †Gomphostrobus
  • †Gomphostrobus bifidus

H

• 

  Fossil of the Ordovician-Silurian tabulate coral Halysites

  †Halysites
  • †Halysites delicatulus – or unidentified comparable form
• †Hebertella
  • †Hebertella sinuaia
• †Helicelasma
  • †Helicelasma rusticum – or unidentified comparable form
• †Helicotoma
• †Hiscobeccus
  • †Hiscobeccus capax
• †Hudsonaster
• †Hypselocrinus – tentative report
  • †Hypselocrinus bisonensis

I

• †Isalaux – type locality for genus
  • †Isalaux canyonensis – type locality for species
• †Isonema
  • †Isonema depressum
  • †Isonema humlis

K

• †Kionoceras

L

• †Lambeoceras
• †Laminatia – tentative report
  • †Laminatia laminata
• †Lecrosia
  • †Lecrosia gouldii
• †Leioproductus
  • †Leioproductus coloradensis
  • †Leioproductus coloradoensis
  • †Leioproductus varispinosus
• †Leperditia
• †Lepidocyclus
  • †Lepidocyclus rectangularis – or unidentified comparable form
• †Lepidodendron
  • †Lepidodendron johnsonii – type locality for species
• †Lepidophloios
  • †Lepidophloios laricinus
• †Lepidophylloides
• †Lepidostrobophyllum
• †Lepidostrobus
  • †Lepidostrobus weberensis – type locality for species
• †Leptaena
• †Leptodesma

• 

  Life restoration of the Permian reptile precursor Limnoscelis

  †Limnoscelis
  • †Limnoscelis dynatis – type locality for species
• †Limnoscelops – type locality for genus
  • †Limnoscelops longifemur – type locality for species
• †Lingula
  • †Lingula huronensis
• †Linoproductus
  • †Linoproductus nodosus
• †Liospira
• †Lophospira
  • †Lophospira perangulata
• †Loxonema

M

• †Macluritella
  • †Macluritella stantoni
• †Macrostachya – tentative report
• †Mariopteris
  • †Mariopteris pygmaea – or unidentified comparable form
• †Meekospira
• †Meristella
• †Modiolopsis
• †Mooreoceras
• †Mytilarca

N

• †Nearoblatta
  • †Nearoblatta rotundata – type locality for species
• †Neochonetes
  • †Neochonetes whitei – or unidentified comparable form
• †Neorthroblattina
  • †Neorthroblattina albolineata – type locality for species

• 

  Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer

  †Neospirifer
  • †Neospirifer goreii
• †Neumatoceras
• †Neuralethopteris
• †Neuropteris
  • †Neuropteris auriculata
  • †Neuropteris dluhoschi
  • †Neuropteris gigantea – tentative report
  • †Neuropteris heterophylla

O

• †Odontopteris
  • †Odontopteris mccoyensis
  • †Odontopteris subcrenulata

• 

  Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon

  †Ophiacodon
• †Ophiopolytretus
  • †Ophiopolytretus aethus
• †Oradectes
  • †Oradectes sanmiguelensis – type locality for species
• †Ormoceras
  • †Ormoceras pollacki
• †Orthoceras
• †Orthodesma
• †Orthonota
• †Orthotetes
  • †Orthotetes inequalis
• †Ortonella
  • †Ortonella kershopensis
• †Oulodus
  • †Oulodus serratus

P

• †Pachystrophia
  • †Pachystrophia contiguus
• †Paladin – tentative report
• †Palaeoglossa
  • †Palaeoglossa hurlbuti
• †Parachaetetes
  • †Parachaetetes glenwoodensis
• †Paurorhyncha
  • †Paurorhyncha cooperi – or unidentified comparable form
  • †Paurorhyncha endlichi

• 

  Fossils of the Late Devonian-Permian fern-like fronds Pecopteris

  †Pecopteris
  • †Pecopteris arborescens
  • †Pecopteris pinnatifida
• †Pentaricida
  • †Pentaricida pentagonalis
• †Pentaridica
  • †Pentaridica pentagonalis
• †Petrablattina
  • †Petrablattina aequa – type locality for species
• †Petrodus
  • †Petrodus patelliformis
• †Phyloblatta
  • †Phyloblatta meieri – type locality for species
• †Physonemus
• †Plaesiomys
  • †Plaesiomys bellilamellosus
  • †Plaesiomys proavitus
• †Planoproductus
  • †Planoproductus depressus
  • †Planoproductus hillsboroensis – or unidentified comparable form
  • †Planoproductus hillsbororensis – or unidentified comparable form
• †Platyceras

• 

  Life restoration of the Carboniferous-Permian sail-backed amphibian Platyhystrix

  †Platyhystrix
  • †Platyhystrix rugosus
• †Pleiadeaster
  • †Pleiadeaster inceptus
• †Poroblattina
  • †Poroblattina arcuata – type locality for species
  • †Poroblattina lakesii – type locality for species
  • †Poroblattina parvula – type locality for species
• †Porostictia
  • †Porostictia perchaensis
• †Probillingsites
  • †Probillingsites kessleri
• †Productella
• †Protocycloceras
  • †Protocycloceras manitouense
• †Pseudochaetes
  • †Pseudochaetes similis
• †Psygmophyllum
  • †Psygmophyllum cuneifolium – or unidentified comparable form
• †Ptiloporella
• †Ptychomalotoechia
  • †Ptychomalotoechia sobrina
• †Pugnax
• †Pugnoides
• †Punctospirifer
  • †Punctospirifer solidirostris

R

• 

  Fossil of the Early Ordovician-Permian benthic alga Receptaculites

  †Receptaculites
  • †Receptaculites articus – or unidentified comparable form
• †Reticularia
• †Rhabdocarpus
  • †Rhabdocarpus dyadicus
• †Rhombopora
• †Rhynchospirina
  • †Rhynchospirina scansa – or unidentified related form
• †Rhynchotrema
  • †Rhynchotrema argenturbicum
• †Robsonoceras
  • †Robsonoceras manitouense

S

• †Saffordophyllum
  • †Saffordophyllum franklini
• †Samaropsis
  • †Samaropsis hesperius
• †Sandia
  • †Sandia welleri
• †Schizodus
  • †Schizodus acuminatus
• †Schizophoria
  • †Schizophoria austalis
  • †Schizophoria australis
• †Schuchertella
  • †Schuchertella coloradoensis
• †Scolecopteris
  • †Scolecopteris elegans

• 

  Fossilized skeleton of the Permian primitive four-limbed animal Seymouria

  †Seymouria
• †Sigillaria
  • †Sigillaria elegans – or unidentified comparable form
  • †Sigillaria ovata
• †Sigillariostrobus
  • †Sigillariostrobus hastatus
• †Sphenophyllum
  • †Sphenophyllum obovatum
• †Sphenopteris
  • †Sphenopteris asplenioides
  • †Sphenopteris cheathami
  • †Sphenopteris microcarpa – or unidentified comparable form
  • †Sphenopteris schimperiana – tentative report
• †Spiloblattina
  • †Spiloblattina weissigensis – type locality for species
• †Spiloblattinidae
  • †Spiloblattinidae gardinerana – type locality for species

• 

  Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer

  †Spirifer
  • †Spirifer centronatus
• Spirorbis
• †Spyroceras
• †Stereoconus
  • †Stereoconus gracilis
• †Stigmaria
  • †Stigmaria ficoides
  • †Stigmaria verrucosa
• †Straparollus
  • †Straparollus clymenioides – or unidentified comparable form
• †Streblopteria
• †Strepsodiscus – type locality for genus
  • †Strepsodiscus major – type locality for species
• †Streptelasma
• †Strimplecrinus
  • †Strimplecrinus dyerensis

• 

  Fossilized shell of the Ordovician-Silurian brachiopod Strophomena

  †Strophomena
• †Strophopleura
  • †Strophopleura notabilis
• †Synarmocrinus
  • †Synarmocrinus cobbani
• †Syringodendron
• †Syringopora
  • †Syringopora surcularia
• †Syringospira
  • †Syringospira prima

T

• †Tarassocrinus
  • †Tarassocrinus synchlydus
• †Tarthinia

• 

  Fossil of the Silurian-Carboniferous crinoid ("sea lily") Taxocrinus (right)

  †Taxocrinus
• †Toernquistia
• †Trichopitys
  • †Trichopitys whitei
• †Trochonema
  • †Trochonema umbilicata

U

• †Ullmannia
• †Ulocrinus
  • †Ulocrinus rockymontanus

V

• †Vanuxemia
  • †Vanuxemia rotundata
• †Vaughnictis
  • †Vaughnictis smithae – type locality for species

W

• 

  Fossilized foliage of the Carboniferous-Permian conifer Walchia

  †Walchia
  • †Walchia hypnoides
  • †Walchia imbricata – or unidentified comparable form
  • †Walchia piniformis
  • †Walchia stricta
• †Walchiastrobus
• †Westonoceras
• †Wewokella
  • †Wewokella solida
• †Wilbernicyathus
  • †Wilbernicyathus donegani

Z

• †Zaphrenthis
• †Zygospira
  • †Zygospira modesta – tentative report

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.