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
 * Astraspis cropped 2.png †[[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

 * Calamites stems.JPG †[[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
 * Museum Mensch und Natur - catenipora.jpg †[[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
 * Compositafossil.jpg †[[Composita]]
 * †Composita gibbosa
 * †Composita ovata
 * †Conocardium
 * †Cordaianthus
 * †Cordaicarpon
 * †Cordaites
 * †Cordaites angulosostriatus
 * †Cornulites
 * †Cranaena
 * †Cranaena subelliptica
 * †Crania
 * †Ctenacanthus
 * †Ctenacanthus buttersi
 * †Ctenacanthus furcicarinatus
 * †Ctenodonta
 * †Cupressocrinites
 * Cutleria wilmarthi reconstruction.jpg †[[Cutleria (animal)|Cutleria]] – type locality for genus
 * †Cutleria wilmarthi – type locality for species
 * †Cyclopteris
 * †Cyrtiopsis
 * †Cyrtiopsis animasensis
 * †Cyrtiopsis conicula
 * †Cyrtiopsis kindlei
 * †Cyrtodonta
 * †Cyrtogomphoceras
 * Cyrtospirifer verneuili duo.jpg †[[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
 * Edestus protopirata1DB.jpg †[[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
 * Eryops1DB.jpg †[[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

 * HalysitesSilurian.jpg †[[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
 * Limnoscelis BW2 cropped.png †[[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
 * Trigonotretidae - Neospirifer ravana.JPG †[[Neospirifer]]
 * †Neospirifer goreii
 * †Neumatoceras
 * †Neuralethopteris
 * †Neuropteris
 * †Neuropteris auriculata
 * †Neuropteris dluhoschi
 * †Neuropteris gigantea – tentative report
 * †Neuropteris heterophylla

O

 * †Odontopteris
 * †Odontopteris mccoyensis
 * †Odontopteris subcrenulata
 * Ophiacodon mirus cropped.png †[[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
 * Pecopteris villosa.jpg †[[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
 * Platyhystrix BW.jpg †[[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

 * KimmswickOzoraMidOrdReceptaculitid.jpg †[[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
 * Seymouria1.jpg †[[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
 * Spirifer perlamosus pedunculate valve.jpg †[[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
 * Strophomena costellata brachial.jpg †[[Strophomena]]
 * †Strophopleura
 * †Strophopleura notabilis
 * †Synarmocrinus
 * †Synarmocrinus cobbani
 * †Syringodendron
 * †Syringopora
 * †Syringopora surcularia
 * †Syringospira
 * †Syringospira prima

T

 * †Tarassocrinus
 * †Tarassocrinus synchlydus
 * †Tarthinia
 * Taxocrinidae - Taxocrinus.JPG †[[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

 * Walchia piniformis.jpg †[[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