List of the Mesozoic life of Idaho

This list of the Mesozoic life of Idaho contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Idaho and are between 252.17 and 66 million years of age.

A

†Albanites ^[1]
- †Albanites americanus – type locality for species^[1]
- †Albanites sheldoni
†Ampezzopleura – tentative report
- †Ampezzopleura tenuis – or unidentified comparable form
†Amphitomaria – tentative report
- †Amphitomaria obscurecostata – type locality for species
†Anaflemingites
- †Anaflemingites russelli – type locality for species
†Anasibirites
- †Anasibirites desertorum
- †Anasibirites lindgreni
†Andangularia
- †Andangularia babylona – type locality for species
- †Andangularia occidentalis – type locality for species
†Anemia
- †Anemia fremonti
†Angularia
- †Angularia rectecostata – type locality for species
†Anthostylis
- †Anthostylis acanthophora
Life restoration of two species of the Late Triassic ammonoid cephalopod Arcestes
†Arcestes – tentative report
†Arctomeekoceras
- †Arctomeekoceras popovi – type locality for species
- †Arctomeekoceras tardum – type locality for species
†Aspenites
- †Aspenites acutus
†Aspiduriella – tentative report
- †Aspiduriella idahoensis – type locality for species
Astarte
- †Astarte meeki
†Astraeomorpha
- †Astraeomorpha crassisepta
†Astrocoenia
- †Astrocoenia idahoensis – type locality for species
†Austrotindaria
- †Austrotindaria canalensis
- †Austrotindaria svalbardensis
Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
†Aviculopecten – report made of unidentified related form or using admittedly obsolete nomenclature
- †Aviculopecten altus – type locality for species
- †Aviculopecten idahoensis
- †Aviculopecten pealei – type locality for species

B

†Bajarunia
- †Bajarunia jacksoni
- †Bajarunia pilata – type locality for species
- †Bajarunia pilatum
†Bakevellia
†Bakevillia
†Blodgettella
- †Blodgettella enormecostata – type locality for species
†Borestus – tentative report
†Brochidiella – type locality for genus
- †Brochidiella idahoensis – type locality for species

C

†Camptonectes
- †Camptonectes platessiformis
†Caribouceras – type locality for genus^[1]
- †Caribouceras slugense – type locality for species^[1]
†Carteria – type locality for genus
- †Carteria hotspringensis – type locality for species
†Ceccaisculitoides
- †Ceccaisculitoides hammondi
Fossillized shell of a Chlamys bivalve
Chlamys
†Chondrocoenia
- †Chondrocoenia idahoensis
- †Chondrocoenia schafhaeutli
†Cimolodon^[2]
- †Cimolodon akersteni – type locality for species^[2]
†Claraia
- †Claraia extrema
- †Claraia stachei
†Clypites
- †Clypites tenuis – type locality for species
†Coelostylina
†Coenastraea
- †Coenastraea hyatti
†Columbites – type locality for genus
- †Columbites crassicostatus – type locality for species
- †Columbites dolnapaensis – or unidentified related form
- †Columbites isabellae – type locality for species
- †Columbites parisianus – type locality for species
A living Corbicula basket clam
Corbicula
†Cordillerites – type locality for genus
- †Cordillerites angulatus – type locality for species
†Coscaites
- †Coscaites crassus – type locality for species
Cossmannea
†Cryptaulax
- †Cryptaulax acutus – type locality for species
- †Cryptaulax gruendeli – type locality for species
- †Cryptaulax nezperceorum – type locality for species
- †Cryptaulax rhabdocolpoides
- †Cryptaulax wallowaensis – type locality for species
†Cryptorhynchia
- †Cryptorhynchia bearensis – type locality for species
†Ctenostreon
- †Ctenostreon gikshanensis – or unidentified comparable form
†Cupressinoxylon
†Cyathocoenia
- †Cyathocoenia squiresi
†Cycadeoidea
†Cylindrobullina – tentative report
Life restoration of the Middle-Late Triassic ichthyosaur Cymbospondylus
†Cymbospondylus

D

†Dagnoceras
- †Dagnoceras bonnevillense
- †Dagnoceras pealei
- †Dagnoceras zappanense – or unidentified related form
†Dalmatites
- †Dalmatites attenuatus
- †Dalmatites richardsi
†Dennstaedtia – tentative report
- †Dennstaedtia fremonti
†Deweveria
- †Deweveria dudresnayi – type locality for species
†Diatrypesis
- †Diatrypesis newelli – type locality for species
†Dicosmos
†Dieneroceras
- †Dieneroceras dieneri
†Distichophyllia
- †Distichophyllia norica

E

†Elysastraea
- †Elysastraea profunda
- †Elysastraea vancouverensis
†Endostoma – tentative report
†Enoploceras
- †Enoploceras newelli – type locality for species
†Entolioides
- †Entolioides utahensis
†Eocalliostoma
- †Eocalliostoma idahoensis – type locality for species
- †Eocalliostoma multicostata – type locality for species
†Eschericeratites – type locality for genus
- †Eschericeratites lytoceratoides – type locality for species
†Euchrysalis – tentative report
†Eucycloscala
- †Eucycloscala binodosa – or unidentified related form
†Euflemingites
- †Euflemingites cirratus – type locality for species
†Eumicrotis – report made of unidentified related form or using admittedly obsolete nomenclature
- †Eumicrotis curta
†Eumorphotis
- †Eumorphotis multiformis

F

†Fengshanites
- †Fengshanites americanus
†Flemingites
- †Flemingites aspenensis
- †Flemingites bannockensis
- †Flemingites cirratus

G

†Gablonzeria
- †Gablonzeria major
- †Gablonzeria profunda
†Germanonautilus
- †Germanonautilus montpelierensis – type locality for species
†Gervillia – report made of unidentified related form or using admittedly obsolete nomenclature
†Glabercolumbites – type locality for genus
- †Glabercolumbites glaber – type locality for species
Gleichenia
†Gnomohalorites
- †Gnomohalorites cordilleranus
†Grammatodon
- †Grammatodon haguei
Interior and exterior of a fossilized shell of the Late Triassic-Eocene marine bivalve Gryphaea
†Gryphaea
- †Gryphaea nebrascensis
- †Gryphaea planoconvexa
†Grypoceras
- †Grypoceras milleri – type locality for species
†Gudrunella – type locality for genus
- †Gudrunella triassica – type locality for species

H

Fossilized shell of the Triassic ammonoid cephalopod Hedenstroemia
†Hedenstroemia
- †Hedenstroemia kossmati
†Hellenites
- †Hellenites elegans – type locality for species
- †Hellenites idahoense
†Hemilecanites
- †Hemilecanites paradiscus
†Hemiprionites
- †Hemiprionites typus
†Heptastylis – tentative report
- †Heptastylis alpina
- †Heptastylis maculata
†Holocrinus
- †Holocrinus smithi

I

†Idahocolumbites
- †Idahocolumbites cheneyi
†Idahospira – type locality for genus
- †Idahospira multispirata – type locality for species
Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
†Inoceramus
†Inyoites
- †Inyoites oweni
†Isculitoides
- †Isculitoides originis – or unidentified related form

J

†Jeanbesseiceras
- †Jeanbesseiceras jacksoni – type locality for species
†Jurassiphorus
- †Jurassiphorus triadicus
†Juvenites – type locality for genus
- †Juvenites dieneri
- †Juvenites kraffti – type locality for species
- †Juvenites septentrionalis
- †Juvenites thermarum

K

†Kazakhstanites
- †Kazakhstanites dolnapensis
†Kiparisovites
- †Kiparisovites ovalis – or unidentified related form
†Kittliconcha
- †Kittliconcha obliquecostata

L

†Lamelliphorus
- †Lamelliphorus acutelaminatus – type locality for species
†Lanceolites
- †Lanceolites compactus
†Lecanites
- †Lecanites arnoldi
†Lepismatina
- †Lepismatina mansfieldi – type locality for species
†Leptochondria
- †Leptochondria curtocardinalis
- †Leptochondria occidanea
†Levicidaris
†Lingula
†Lingularia
†Liostrea
- †Liostrea strigilecula
†Litogaster
- †Litogaster turnbullensis – type locality for species
Fossilized shell of the Triassic-modern marine bivalve Lopha
Lopha
†Loxopleurus
- †Loxopleurus belliplicatus
†Lyosoma
- †Lyosoma powelli

M

†Marcouxia
- †Marcouxia astakhovi
†Maturifusus – tentative report
- †Maturifusus siphonatus – type locality for species
†Meekoceras
- †Meekoceras cristatum
- †Meekoceras gracilitatis – type locality for species
- †Meekoceras haydeni
- †Meekoceras micromphalus
- †Meekoceras mushbachanum
- †Meekoceras patelliforme
- †Meekoceras sanctorum
†Megasphaeroceras
- †Megasphaeroceras rotundum – or unidentified related form
†Metadagnoceras
- †Metadagnoceras pulchrum – or unidentified related form
- †Metadagnoceras unicum
†Metussuria
- †Metussuria waageni – type locality for species
†Microtaenia
- †Microtaenia variabilis
†Miocidaris
†Mojsvaroceras
- †Mojsvaroceras frenchi – type locality for species
†Myalina
- †Myalina postcarbonica

N

†Naticopsis – tentative report
†Nemacanthus
- †Nemacanthus elegans – type locality for species
†Neocolumbites
†Neogondolella
- †Neogondolella jubata
†Neoschizodus
†Neospathodus
- †Neospathodus homeri – tentative report
- †Neospathodus triangularis
†Nerinea
†Nodoconus – type locality for genus
- †Nodoconus nodiferus – type locality for species
†Nordophiceratoides
- †Nordophiceratoides adriani – type locality for species
- †Nordophiceratoides bartolinae – type locality for species
- †Nordophiceratoides catherinae – type locality for species
- †Nordophiceratoides gracilis – type locality for species
Fossilized shell of the Middle Jurassic ammonoid cephalopod Normannites
†Normannites
- †Normannites crickmayi – or unidentified comparable form
†Nuetzelopsis
- †Nuetzelopsis tozeri

O

†Obnixia – type locality for genus
- †Obnixia thaynesiana – type locality for species
†Omphaloptycha
- †Omphaloptycha jaworskii
†Orthoceras
Shell of an Ostrea, or oyster
Ostrea
- †Ostrea strigicula
†Owenites
- †Owenites koeneni – or unidentified comparable form

P

Fossilized foliage of the Carboniferous-Late Cretaceous plant Pagiophyllum
†Pagiophyllum
†Palaeastraea
†Palaeonarica
- †Palaeonarica lapwaiensis – type locality for species
†Palaeophyllites – tentative report
†Pamiroseris
- †Pamiroseris rectilamellosa
- †Pamiroseris smithi
†Paradelphinulopsis
- †Paradelphinulopsis vallieri
†Paragoceras
- †Paragoceras malayanus – or unidentified comparable form
- †Paragoceras timorensis – or unidentified related form
†Paranannites – type locality for genus
- †Paranannites aspenensis – type locality for species
†Paraphyllanthoxylon
- †Paraphyllanthoxylon idahoense
†Paullia
†Pentacrinus
- †Pentacrinus asteriscus
†Periallus – type locality for genus
- †Periallus woodsidensis – type locality for species
†Permophorus
- †Permophorus bregeri
- †Permophorus triassicus
†Phacelophyllia – report made of unidentified related form or using admittedly obsolete nomenclature
- †Phacelophyllia suttonensis
†Phacelostylophyllum
- †Phacelostylophyllum zitteli
†Phaedrysmocheilus
- †Phaedrysmocheilus idahoensis – type locality for species
Fossilized shell of the Early Triassic-Pliocene marine bivalve Pholadomya
Pholadomya
- †Pholadomya inaequiplicata
†Piarorhynchella
- †Piarorhynchella triassica
†Plagiostoma
- †Plagiostoma occidentalis
†Platymya
- †Platymya rockymontana
†Platyvillosus
- †Platyvillosus asperatus
†Pleuromya
- †Pleuromya subcompressa
Fossilized shell of the Carboniferous-Triassic nautiloid cephalopod Pleuronautilus
†Pleuronautilus
†Polygyrina – tentative report
- †Polygyrina subannulata – type locality for species
†Portneufia – type locality for genus
- †Portneufia episulcata – type locality for species
†Praelittorina
- †Praelittorina sepkoskii – type locality for species
†Praesibirites – tentative report
†Precorynella
†Preflorianites
- †Preflorianites toulai
†Procarnites
†Procolumbites
- †Procolumbites karataucicus
†Prohungarites
- †Prohungarites beyrichitoides – type locality for species
- †Prohungarites gutstadti
- †Prohungarites mckelvei
†Promathildia – tentative report
- †Promathildia multituberculata – type locality for species
†Promyalina
- †Promyalina putiatinensis
- †Promyalina spathi
†Pronoella
- †Pronoella cinnabarensis
- †Pronoella uintahensis
†Protocardia
- †Protocardia schucherti – or unidentified comparable form
†Protodonax
†Protogusarella – type locality for genus
- †Protogusarella smithi – type locality for species
†Protorcula – tentative report
- †Protorcula concava – type locality for species
†Pseudaspidites
- †Pseudaspidites wheeleri
†Pseudharpoceras
- †Pseudharpoceras idahoense
Fossilized shell of a Pseudomelania sea snail
†Pseudomelania – tentative report
†Pseudomonotis
- †Pseudomonotis idahoensis
- †Pseudomonotis pealei
†Pseudosageceras
- †Pseudosageceras multilobatum – type locality for species
†Pseudoscalites
- †Pseudoscalites elegantissimus – or unidentified comparable form
†Pteria – tentative report
- †Pteria ussurica – or unidentified comparable form
†Ptychomphalus – tentative report
- †Ptychomphalus protei – or unidentified related form
†Ptychostoma
- †Ptychostoma ornata – type locality for species
†Pyknotylacanthus – type locality for genus
- †Pyknotylacanthus spathianus – type locality for species
†Pyrgulifera
- †Pyrgulifera humerosa

Q

†Quenstedtia
- †Quenstedtia sublevis

R

†Retiophyllia
- †Retiophyllia clathrata – or unidentified comparable form
- †Retiophyllia dawsoni
- †Retiophyllia parviseptum
†Rhaetina
- †Rhaetina incurvirostra – type locality for species
Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella
†Rhynchonella – report made of unidentified related form or using admittedly obsolete nomenclature
†Rudolftruempyiceras
- †Rudolftruempyiceras apostolicum
- †Rudolftruempyiceras apostolicus

S

Fossilized skeleton of the Early Triassic-Middle Jurassic bony fish Saurichthys
†Saurichthys
- †Saurichthys elongatus – or unidentified comparable form
†Sibirites
- †Sibirites carinatus – type locality for species
†Silberlingeria
- †Silberlingeria bearlakensis
- †Silberlingeria coronata
- †Silberlingeria sarahjanae – type locality for species
†Siphonilda – type locality for genus
- †Siphonilda pulchella – type locality for species
†Sororcula
- †Sororcula gracilis
†Spiniomphalus – type locality for genus
- †Spiniomphalus duplicatus – type locality for species
†Spiriferina
- †Spiriferina roundyi
†Spirostylus
†Spondylospira
- †Spondylospira lewesensis
†Stacheites
- †Stacheites concavus
- †Stacheites floweri
- †Stacheites prionoides – or unidentified related form
†Stemmatoceras
- †Stemmatoceras albertense – or unidentified related form
Fossilized shell of the Middle Jurassic ammonoid cephalopod Stephanoceras
†Stephanoceras
- †Stephanoceras skidegatensis – or unidentified comparable form
†Stylophyllum
- †Stylophyllum paradoxum
†Subcolumbites
- †Subcolumbites perrinismithi – or unidentified related form
†Subhungarites
- †Subhungarites yatesi
†Submeekoceras
- †Submeekoceras mushbachanum – type locality for species
†Svalbardiceras
- †Svalbardiceras freboldi – or unidentified comparable form
- †Svalbardiceras spitzbergensis – or unidentified related form
- †Svalbardiceras sulcatum – type locality for species

T

†Tancredia – tentative report
†Tapponnierites – type locality for genus
- †Tapponnierites tenuicostatus – type locality for species
†Tardicolumbites – type locality for genus
- †Tardicolumbites tardicolumbus – type locality for species
†Teinostomopsis – tentative report
†Tempskya
- †Tempskya wesselii
Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus
†Tenontosaurus
†Teretrina
- †Teretrina aculeata
- †Teretrina canaliculata – type locality for species
- †Teretrina schulberti – type locality for species
†Thamnasteria
- †Thamnasteria smithi
†Thaumastocoelia
†Thecomeandra
- †Thecomeandra vallieri – type locality for species
†Tirolites
- †Tirolites harti
- †Tirolites knighti
- †Tirolites pealei
- †Tirolites smithi – type locality for species
†Tretospira
†Triadocidaris
Fossilized shell of the Permian-Paleocene marine bivalve Trigonia
†Trigonia
- †Trigonia montanaensis
†Tyrsoecus – tentative report

U

†Ueckerconulus
- †Ueckerconulus noricus – type locality for species
†Undularia
- †Undularia americana – type locality for species
†Unionites
†Ussuria
- †Ussuria occidentalis
†Ussurites
- †Ussurites mansfeldi
- †Ussurites mansfieldi
- †Ussurites submansfeldi – type locality for species

V

†Vex – type locality for genus
- †Vex semisimplex – type locality for species
†Vitimetula – type locality for genus
- †Vitimetula parva – type locality for species

W

†Weitschatopsis
- †Weitschatopsis pulchra
†Worthenia
- †Worthenia rhombifera – or unidentified comparable form
†Wyomingites – type locality for genus
- †Wyomingites aplanatus – type locality for species
- †Wyomingites arnoldi – type locality for species

X

†Xenoceltites
- †Xenoceltites cordilleranus
- †Xenoceltites crenulatus – type locality for species
- †Xenoceltites spencei
Fossilized shells of the ammonoid cephalopod Xenodiscus
†Xenodiscus
- †Xenodiscus gilberti
- †Xenodiscus tarpeyi
- †Xenodiscus waageni
- †Xenodiscus whiteanus

Y

†Yunnania – tentative report
- †Yunnania subcincta
†Yvesgalleticeras
- †Yvesgalleticeras montpelierense
- †Yvesgalleticeras raphaeli – type locality for species

Z

†Zardinechinus
†Zygopleura

References

^ ^a ^b ^c ^d Arnaud Brayard; James F. Jenks; Kevin G. Bylund; the Paris Biota Team (2019). "Ammonoids and nautiloids from the earliest Spathian Paris Biota and other early Spathian localities in southeastern Idaho, USA". Geobios. 54: 13–36. doi:10.1016/j.geobios.2019.04.007.
^ ^a ^b Lucas N. Weaver; Gregory P. Wilson; L. J. Krumenacker; Kayla Mclaughlin; Jason R. Moore; David J. Varricchio (2019). "New multituberculate mammals from the mid-Cretaceous (lower Cenomanian) Wayan Formation of southeastern Idaho and implications for the early evolution of Cimolodonta". Journal of Vertebrate Paleontology. 39 (2): e1604532. doi:10.1080/02724634.2019.1604532. S2CID 196655261.

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

[Caribouceras-1] Arnaud Brayard; James F. Jenks; Kevin G. Bylund; the Paris Biota Team (2019). "Ammonoids and nautiloids from the earliest Spathian Paris Biota and other early Spathian localities in southeastern Idaho, USA". Geobios. 54: 13–36. doi:10.1016/j.geobios.2019.04.007.

[cimolodon-akersteni-2] Lucas N. Weaver; Gregory P. Wilson; L. J. Krumenacker; Kayla Mclaughlin; Jason R. Moore; David J. Varricchio (2019). "New multituberculate mammals from the mid-Cretaceous (lower Cenomanian) Wayan Formation of southeastern Idaho and implications for the early evolution of Cimolodonta". Journal of Vertebrate Paleontology. 39 (2): e1604532. doi:10.1080/02724634.2019.1604532. S2CID 196655261.

[1]

[2]