# List of the Mesozoic life of Nevada

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

## A

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* †Acrochordiceras – type locality for genus
** †Acrochordiceras carolinae
** †Acrochordiceras hatschekii
** †Acrochordiceras hyatti – type locality for species
* Fossilized teeth of the Permian-Paleocene cartilaginous fish Acrodus †Acrodus
** †Acrodus alexandrae – type locality for species
** †Acrodus cuneocostatus – type locality for species
** †Acrodus oreodontus – type locality for species
** †Acrodus spitzbergensis
** †Acrodus vermicularis – or unidentified comparable form
* †Acuminatella
** †Acuminatella acuminata
** †Acuminatella angusta
* †Acutomeekoceras – type locality for genus
** †Acutomeekoceras rieberi – type locality for species
* Fossilized shell of the Early Cretaceous-Oligocene turtle Adocus †Adocus – or unidentified comparable form
* †Agerchlamys
** †Agerchlamys boellingi – type locality for species
* †Alanites
** †Alanites costatus – type locality for species
** †Alanites mulleri – type locality for species
** †Alanites obesus – type locality for species
* †Allocosmia
* †Alsatites
** †Alsatites pamlicoensis – type locality for species
* †Ambites
** †Ambites lilangensis
** †Ambites radiatus – or unidentified related form
* †Ampakabastraea
** †Ampakabastraea cowichanensis
* †Amphipopanoceras
** †Amphipopanoceras selwyni
* †Anaflemingites
** †Anaflemingites russelli
** †Anaflemingites silberlingi
* †Anagymnites
* †Anagymnotoceras
** †Anagymnotoceras favretense
** †Anagymnotoceras variabilis – type locality for species
* †Anasibirites
** †Anasibirites desertorum
** †Anasibirites kingianus
* †Anatropites
** †Anatropites silberlingi
** †Anatropites sulfurensis – or unidentified comparable form
* †Angulaticeras
** †Angulaticeras posttaurinus - or unidentified loosely related form
* †Anolcites
** †Anolcites barberi – type locality for species
** †Anolcites drakei – type locality for species
* †Antiquilima
** †Antiquilima ladinica – type locality for species
* †Aplococeras
** †Aplococeras parvus – type locality for species
** †Aplococeras smithi
** †Aplococeras vogdesi – type locality for species
* †Arcavicula
* Life restoration of two species of the Late Triassic ammonoid cephalopod Arcestes †Arcestes
** †Arcestes andersoni – type locality for species
** †Arcestes gigantogaleatus
** †Arcestes oligosarcus
* †Arctoceras
** †Arctoceras tuberculatum
** †Arctoceras tuberculum
* †Arctohungarites
** †Arctohungarites tregoi – type locality for species
* †Arctoprionites
* †Ardoreosomus – type locality for genus
** †Ardoreosomus occidentalis – type locality for species
* †Areaseris – type locality for genus
** †Areaseris nevadaensis – type locality for species
* †Arenicolites
* †Aspenites
** †Aspenites acutus
* Astarte
* Fossil of the Ordovician-Modern sea star trace fossil ichnogenus Asteriacites Asteriacites
** †Asteriacites lumbricalis
* †Astraeomorpha
** †Astraeomorpha confusa
* †Atractites
** †Atractites clavatulus – type locality for species
** †Atractites elegans – type locality for species
** †Atractites solidus – type locality for species
* Atrina
** †Atrina sinuta – type locality for species
* †Augustaceras – type locality for genus
** †Augustaceras escheri – type locality for species
** †Augustaceras robustum – type locality for species
** †Augustaceras staffordi – type locality for species
* Life restoration of the Middle Triassic plesiosaur relative Augustasaurus †Augustasaurus – type locality for genus
** †Augustasaurus hagdorni – type locality for species
* †Aulametacoceras – tentative report
** †Aulametacoceras humboldtensis – type locality for species
* Avicula
** †Avicula homfrayi – type locality for species
* †Avicularia
** †Avicularia sayeri – or unidentified comparable form

## B

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* †Badouxia
** †Badouxia canadensis
** †Badouxia columbiae
** †Badouxia forticostata
* †Balatonites
** †Balatonites hexatuberculatus – type locality for species
** †Balatonites kingi – type locality for species
** †Balatonites shoshonensis – type locality for species
** †Balatonites whitneyi
* †Balatonospira – tentative report
** †Balatonospira lipoldi – or unidentified comparable form
* †Billingsites
** †Billingsites cordeyi
** †Billingsites escargueli – type locality for species
* Life restoration of the Triassic bony fish Birgeria †Birgeria
* †Bivalvia conc
* †Bositra
** †Bositra favretensis – type locality for species
* †Brackites
** †Brackites spinosus – type locality for species
** †Brackites vogdesi – type locality for species
* †Bradyia
** †Bradyia coyotense – type locality for species
* †Brasilichnium
* †Bulogites
** †Bulogites mojsvari

## C

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* †Calliconites
** †Calliconites nevadensis – type locality for species
* †Candelarialepis – type locality for genus
** †Candelarialepis argentus – type locality for species
* Cardinia
* †Carnites – tentative report
* †Cassianastraea
** †Cassianastraea reussi
* †Cassianella
** †Cassianella ligulata
** †Cassianella lingulata
* †Caucasites
** †Caucasites nicholsi – type locality for species
* †Caucasorhynchia
** †Caucasorhynchia altaplecta
* †Ceccaceras
** †Ceccaceras stecki
* †Ceccaisculitoides
** †Ceccaisculitoides elegans – type locality for species
* †Ceratites
** †Ceratites weaveri – type locality for species
** †Ceratites whitneyi – type locality for species
* Life restoration of the Late Triassic-Eocene lungfish Ceratodus †Ceratodus
* †Ceriostella – type locality for genus
** †Ceriostella martini
** †Ceriostella parva
** †Ceriostella variabilis – type locality for species
* †Chiratites
** †Chiratites bituberculatus – type locality for species
** †Chiratites retrospinosus – type locality for species
* Chlamys
* †Chondrocoenia
** †Chondrocoenia schafhaeutli
* †Chonespondylus
** †Chonespondylus grandis
* †Choristoceras
** †Choristoceras crickmayi
** †Choristoceras marshi
** †Choristoceras minutum
** †Choristoceras rhaeticum
** †Choristoceras robustum – type locality for species
** †Choristoceras shoshonensis – type locality for species
* †Churkites
** †Churkites noblei – type locality for species
* †Cinnabaria
** †Cinnabaria expansa
* †Claraia
** †Claraia aurita
** †Claraia clarai
** †Claraia stachei
* †Clypites
** †Clypites evolvens – or unidentified comparable form
* †Cochlichnus
* †Cochloceras
** †Cochloceras fisheri
* Fossil of the Triassic bony fish Colobodus †Colobodus
* †Complanicorona
** †Complanicorona rugosimargines – or unidentified related form
* †Confusionella – report made of unidentified related form or using admittedly obsolete nomenclature
** †Confusionella loczyi
* †Conservatella
** †Conservatella conservativa – type locality for species
* †Constrigymnites
** †Constrigymnites robertsi – type locality for species
* †Coral
* Corbula – report made of unidentified related form or using admittedly obsolete nomenclature
** †Corbula blakei – type locality for species
* †Cordillerites
** †Cordillerites angulatus – or unidentified comparable form
* Fossilized shell of the Early Jurassic ammonoid cephalopod Coroniceras †Coroniceras
** †Coroniceras fergusoni – type locality for species
** †Coroniceras grantsvillense – type locality for species
** †Coroniceras involutum – type locality for species
** †Coroniceras luningense – type locality for species
** †Coroniceras volcanoense – type locality for species
* †Costatoria
* †Crassistella
** †Crassistella juvavica
* †Crittendenia
** †Crittendenia kummeli – type locality for species
* †Crucella
* †Ctenostreon
* †Cuifastraea – tentative report
* †Cuifia
** †Cuifia marmorea
* †Curionia
* †Curtoseris
** †Curtoseris dunlapcanyonae – type locality for species
** †Curtoseris parva
* †Cycloceltites
** †Cycloceltites arduini
** †Cycloceltites tozeri – type locality for species
* Life restoration of the Middle-Late Triassic ichthyosaur Cymbospondylus †Cymbospondylus
** †Cymbospondylus natans
** †Cymbospondylus nevadanus – type locality for species
** †Cymbospondylus petrinus
** †Cymbospondylus piscosus
* †Cypellospongia – type locality for genus
** †Cypellospongia fimbriartis

## D

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* †Dalmatites
** †Dalmatites attenuatus
* Fossilized shell of the Middle-Late Triassic marine bivalve Daonella †Daonella
** †Daonella americana – type locality for species
** †Daonella dubia
** †Daonella elongata – or unidentified comparable form
** †Daonella gabbi
** †Daonella indica – or unidentified related form
** †Daonella lindstroemi
** †Daonella lommeli – or unidentified comparable form
** †Daonella lommelli – or unidentified comparable form
** †Daonella moussoni
** †Daonella rieberi – type locality for species
** †Daonella sturi – or unidentified comparable form
* †Daxatina
* †Decapod
* †Decopod
* †Deweveria
** †Deweveria crenulata – type locality for species
* †Dieneroceras
** †Dieneroceras dieneri
** †Dieneroceras spathi
** †Dieneroceras subquadratum
* †Discophyllites
** †Discophyllites ebneri
* †Discoptychites
** †Discoptychites megalodiscus
* †Discosiphonella
* †Discretella
** †Discretella discreta – type locality for species
* †Distichomeandra
** †Distichomeandra minor – or unidentified comparable form
* †Distichophyllia – report made of unidentified related form or using admittedly obsolete nomenclature
** †Distichophyllia norica
* †Dixieceras
** †Dixieceras lawsoni – type locality for species
* †Dyscritellopsis
** †Dyscritellopsis montelloensis – type locality for species
** †Dyscritellopsis thaynesianus – type locality for species

## E

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* †Elegantinia
** †Elegantinia paullorum – type locality for species
* †Ellisonia – type locality for genus
** †Ellisonia nevadensis – type locality for species
** †Ellisonia triassica – type locality for species
* †Elysastraea
** †Elysastraea austriaca – or unidentified comparable form
** †Elysastraea norica – or unidentified comparable form
** †Elysastraea profunda
* Fossils of the Middle Triassic crinoid ("sea lily") Encrinus †Encrinus
* †Endothyra – or unidentified comparable form
* †Enteropleura
** †Enteropleura jenksi – type locality for species
* †Entolioides
** †Entolioides utahensis – type locality for species
* †Entolium
* †Eocomoseris
** †Eocomoseris ramosa
* †Eogymnotoceras
** †Eogymnotoceras janvieri – type locality for species
** †Eogymnotoceras thompsoni – type locality for species
** †Eogymnotoceras transiens – type locality for species
** †Eogymnotoceras tuberculatum – type locality for species
* †Eolytoceras
** †Eolytoceras artemisia – type locality for species
** †Eolytoceras guexi – type locality for species
** †Eolytoceras tasekoi
* †Eoprotrachyceras
** †Eoprotrachyceras americanum
** †Eoprotrachyceras dunni – type locality for species
** †Eoprotrachyceras lahontanum – type locality for species
** †Eoprotrachyceras meeki
** †Eoprotrachyceras subasperum – type locality for species
* †Epigondolella
** †Epigondolella bidentata
** †Epigondolella englandi
** †Epigondolella mosheri
* †Epigymnites
** †Epigymnites alexandrae – type locality for species
* †Eremites
* †Eschericeratites
** †Eschericeratites lytoceratoides
* †Eudiscoceras – type locality for genus
** †Eudiscoceras gabbi – type locality for species
* †Euflemingites
** †Euflemingites cirratus
* †Eumorphotis
** †Eumorphotis multiformis
* †Eutomoceras – type locality for genus
** †Eutomoceras dalli – type locality for species
** †Eutomoceras dunni – type locality for species
** †Eutomoceras lahontanum – type locality for species
** †Eutomoceras laubei – type locality for species

## F

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* †Fanthalamia
** †Fanthalamia astoma
* †Favreticeras
** †Favreticeras ransomei – type locality for species
** †Favreticeras rieberi – type locality for species
** †Favreticeras wallacei – type locality for species
* †Flexastrea – type locality for genus
** †Flexastrea serialis – type locality for species
* †Frankites
** †Frankites sutherlandi
* †Frechites
** †Frechites nevadanus – type locality for species
** †Frechites occidentalis – type locality for species
* †Frenguelliella
* †Furnishius – type locality for genus
** †Furnishius triserratus – type locality for species

## G

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* †Gabboceras – type locality for genus
** †Gabboceras delicatum – type locality for species
* †Galfettites
** †Galfettites lucasi – type locality for species
* †Gaudemerites – type locality for genus
** †Gaudemerites rectangularis – type locality for species
* †Germanonautilus
** †Germanonautilus furlongi – type locality for species
** †Germanonautilus johnstoni – type locality for species
** †Germanonautilus kummeli
* †Gervillaria
** †Gervillaria favretensis – type locality for species
** †Gervillaria ponderosa – type locality for species
* Fossilized shell of the Carboniferous-Eocene bivalve Gervillia †Gervillia
* †Ginsburgites
** †Ginsburgites americanus – type locality for species
* †Globacrochordiceras
** †Globacrochordiceras transpacificum
* †Glyptophiceras – tentative report
* †Gnomohalorites
** †Gnomohalorites americanus
* †Gondolella
** †Gondolella carinita – type locality for species
** †Gondolella denuda – or unidentified related form
** †Gondolella eotriassica – type locality for species
** †Gondolella milleri – type locality for species
** †Gondolella nevadensis – type locality for species
** †Gondolella planata – type locality for species
* †Goniatites – report made of unidentified related form or using admittedly obsolete nomenclature
** †Goniatites laevidorsatus
* †Goniomya
* †Gonionotites
* †Grambergia
* †Gresslya
* †Groenlandites
** †Groenlandites merriami – type locality for species
** †Groenlandites pridaense – type locality for species
* Interior and exterior of a fossilized shell of the Late Triassic-Eocene marine bivalve Gryphaea †Gryphaea
** †Gryphaea nevadensis – type locality for species
* †Grypoceras
** †Grypoceras brahmanicum – or unidentified comparable form
** †Grypoceras whitneyi – type locality for species
* †Guangxidella
** †Guangxidella bransoni – type locality for species
* †Guembelastraea
** †Guembelastraea martini
* †Guembelites
** †Guembelites jandianus
** †Guembelites philostrati
* †Guexiceras – type locality for genus
** †Guexiceras profundus – type locality for species
* †Guexites
** †Guexites pacificus – type locality for species
* †Guineana
** †Guineana alta – type locality for species
* †Guodunites
** †Guodunites monneti – or unidentified comparable form
* Fossilized shell of the Triassic ammonoid cephalopod Gymnites †Gymnites
** †Gymnites billingsi – type locality for species
** †Gymnites calli – type locality for species
** †Gymnites humboldti – or unidentified comparable form
** †Gymnites perplanus – type locality for species
** †Gymnites tozeri – type locality for species
** †Gymnites tregorum – type locality for species
* †Gymnotoceras – type locality for genus
** †Gymnotoceras blakei – type locality for species
** †Gymnotoceras ginsbergi – or unidentified related form
** †Gymnotoceras ginsburgi – type locality for species
** †Gymnotoceras mimetus – type locality for species
** †Gymnotoceras praecursor – type locality for species
** †Gymnotoceras rotelliformis – type locality for species
** †Gymnotoceras weitschati – type locality for species
* †Gyrochorte
* †Gyrolepis – tentative report

## H

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* †Halobia
** †Halobia beyrichi
** †Halobia selwyni – or unidentified comparable form
** †Halobia septentrionalis
* †Hannaoceras
* †Hemilecanites
** †Hemilecanites fastigatus – type locality for species
** †Hemilecanites paradiscus – or unidentified comparable form
* †Hemiprionites
** †Hemiprionites roberti – type locality for species
* †Heptastylis
** †Heptastylis stromatoporoides – or unidentified comparable form
* †Hibbardella
** †Hibbardella subsymmetrica – type locality for species
* †Hollandites
** †Hollandites congressensis – type locality for species
** †Hollandites pelletieri – or unidentified comparable form
** †Hollandites silberlingi – type locality for species
** †Hollandites spivaki
** †Hollandites voiti – or unidentified related form
* †Holocrinus
* †Humboldtites
** †Humboldtites septentrionalis – type locality for species
* †Hungarites
** †Hungarites inermis
* Restoration of two of the Permian-Late Cretaceous cartilaginous fish Hybodus †Hybodus
** †Hybodus nevadensis – type locality for species
* †Hyerifalchia

## I

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* †Ichthyosaurus
* †Intornites
** †Intornites mctaggarti
** †Intornites nevadanus – type locality for species
* †Inyoites
** †Inyoites oweni
* †Iranothalamia – tentative report
** †Iranothalamia incrustans – type locality for species
* †Isculites
** †Isculites constrictus – type locality for species
** †Isculites meeki – type locality for species
** †Isculites tozeri – type locality for species
* †Ismidites
** †Ismidites marmarensis – or unidentified comparable form
* Isocrinus

## J

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* †Japonites
** †Japonites starensis – type locality for species
** †Japonites surgriva – or unidentified comparable form
** †Japonites welteri – type locality for species
* †Jaworskiella
** †Jaworskiella siemonmulleri – type locality for species
* †Jenksites
** †Jenksites flexicostatus – type locality for species
* †Juraphyllites - broadly construed
* †Juvavites
* †Juvenites
** †Juvenites dieneri
** †Juvenites septentrigonalis
** †Juvenites septentrionalis
** †Juvenites thermarum

## K

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* †Kalentera – tentative report
** †Kalentera lawsi – type locality for species
* †Kashmirites
** †Kashmirites nivalis
* †Khytrastrea – type locality for genus
** †Khytrastrea cuifiamorpha – type locality for species
** †Khytrastrea silberlingi – type locality for species
* †Klamatgites
* †Klamathites
** †Klamathites macrolobatus
** †Klamathites schucherti
* †Klamthites
* †Koipatoceras – type locality for genus
** †Koipatoceras discoideus – type locality for species
** †Koipatoceras kraffti – type locality for species
* †Kraussodontus
* †Kuhnastraea
** †Kuhnastraea decussata – or unidentified comparable form

## L

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* †Labascicorona
* †Lanceolites
** †Lanceolites bicarinatus
** †Lanceolites compactus
* †Lecanites
** †Lecanites arnoldi
* †Leiophyllites
* †Lenotropites
** †Lenotropites caurus
* †Lepismatina
** †Lepismatina mansfieldi
* †Leptochondria
** †Leptochondria curtocardinalis
** †Leptochondria occidanea
** †Leptochondria shoshonensis – type locality for species
* Restoration of a school of the Middle Triassic-Early Cretaceous bony fish Leptolepis †Leptolepis
** †Leptolepis nevadensis
* Limaria
* †Liostrea – tentative report
** †Liostrea jungi – type locality for species
* †Lithiotis
** †Lithiotis problematica
* †Lockeia
* †Lonchodina
** †Lonchodina aequiarcuata – type locality for species
** †Lonchodina nevadensis – type locality for species
** †Lonchodina triassica – type locality for species
* †Lonchodus
* †Longobardites
** †Longobardites parvus – type locality for species
** †Longobardites zsigmondyi
* Fossilized shell of the Triassic-modern marine bivalve Lopha Lopha
** †Lopha montis
* †Loxochlamys – type locality for genus
** †Loxochlamys corallina – type locality for species

## M

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* Fossils of the Cretaceous theropod dinosaur egg oogenus Macroelongatoolithus †Macroelongatoolithus
** †Macroelongatoolithus carlylei – or unidentified comparable form
* †Maeandrostylis
** †Maeandrostylis vancouverensis
* †Marcouxites
** †Marcouxites spinifer – type locality for species
* †Margarogyra
** †Margarogyra silberlingi – type locality for species
* Marginulina
* †Meandrostylus
** †Meandrostylus vancouverensis
* †Meandrovolzeia
* †Meekoceras
** †Meekoceras gracilitatis
** †Meekoceras mushbachanum – or unidentified comparable form
** †Meekoceras tenuistriatum – or unidentified comparable form
* †Megaphyllites
** †Megaphyllites wildhorsensis – type locality for species
* †Meleagrinella
* †Mesomiltha
* †Mesomorpha
** †Mesomorpha newpassensis – type locality for species
* †Metadagnoceras
** †Metadagnoceras youngi – type locality for species
* †Metadinarites
** †Metadinarites desertorus – type locality for species
* †Metapolygnathus
** †Metapolygnathus communisti - or unidentified loosely related form
* †Metophioceras
** †Metophioceras rotarium – or unidentified related form
** †Metophioceras trigonatum – type locality for species
* †Metussuria
* †Michelinoceras
** †Michelinoceras campanile
* †Microconchus
* †Minasteria
** †Minasteria shastensis
* †Miocidaris
* †Misikella
** †Misikella posthernsteini
* Life restoration of the Middle Triassic ichthyosaur Mixosaurus †Mixosaurus
** †Mixosaurus natans – or unidentified comparable form
* †Modiolus
* †Modiomorpha – tentative report
** †Modiomorpha lata – type locality for species
** †Modiomorpha ovata – type locality for species
* †Mojsisovicsites
* †Mojsvarites
** †Mojsvarites agenor – type locality for species
* Fossilized shell of the Middle Triassic ammonoid cephalopod Monophyllites †Monophyllites
** †Monophyllites wengensis
* †Monotis
** †Monotis alaskana
** †Monotis haueri
** †Monotis subcircularis
* †Montlivaltia – report made of unidentified related form or using admittedly obsolete nomenclature
* †Mucrovenator – type locality for genus
** †Mucrovenator minimus – type locality for species
* †Mullericeras – type locality for genus
** †Mullericeras fergusoni – type locality for species
** †Mullericeras spitiense
* †Myalina
** †Myalina postcarbonica
* Fossilized shell of the Late Cretaceous marine bivalve Myophoria †Myophoria
** †Myophoria humboldtensis – type locality for species
** †Myophoria shoshoniensis
* †Myophoricardium
* †Mytilus
** †Mytilus homfrayi – type locality for species

## N

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Nabolella
* †Naomichelys
* †Nautiloida
* †Neogondolella
** †Neogondolella mombergensis
* Fossilized shell of the Triassic bivalve Neomegalodon †Neomegalodon
* †Neophyllites – or unidentified comparable form
* †Neoprioniodus
** †Neoprioniodus unicornus – type locality for species
* †Neoschizodus
** †Neoschizodus elongatus – type locality for species
* †Nerinea
* †Nevadalithium
* †Nevadapecten – type locality for genus
** †Nevadapecten lynnae – type locality for species
* †Nevadaphyllites
** †Nevadaphyllites compressus
** †Nevadaphyllites microumbilicatus – type locality for species
* †Nevadathalamia
** †Nevadathalamia cylindrica
* †Nevadisculites
** †Nevadisculites depressus – type locality for species
** †Nevadisculites minutus – type locality for species
** †Nevadisculites smithi – type locality for species
** †Nevadisculites taylori – type locality for species
* †Nevadites
** †Nevadites humboldtensis – type locality for species
** †Nevadites hyatti – type locality for species
* †Nevadoseris
** †Nevadoseris puncata
** †Nevadoseris punctata – type locality for species
* †Nicholsites
** †Nicholsites newpassensis – type locality for species
** †Nicholsites parisi – type locality for species
** †Nicholsites tozeri – type locality for species
* †Nitanoceras
** †Nitanoceras selwyni
* Nodosaria – or unidentified comparable form
* †Noridiscites
* †Nuclana
* Nuculana
* †Nuculoma

## O

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Obnixia – type locality for genus
** †Obnixia thaynesiana
* †Odoghertyceras
** †Odoghertyceras deweveri
* †Oedalmia
** †Oedalmia norica
* †Omanoselache
** †Omanoselache bucheri – type locality for species
* Life restoration of the Middle-Late Triassic ichthyosaur Omphalosaurus †Omphalosaurus – type locality for genus
** †Omphalosaurus nevadanus – type locality for species
* †Ophiceras
** †Ophiceras sakuntala
* †Oppelismilia
* †Orthoceras
** †Orthoceras blakei – type locality for species
* Ostrea
* †Oulodus
** †Oulodus triassica – type locality for species
* †Owenites
** †Owenites koeneni
* †Oxylongobardites
** †Oxylongobardites acutus – type locality for species
* †Oxytoma
** †Oxytoma grantsvillensis – type locality for species
** †Oxytoma inequivalvis
* †Ozarkodina
** †Ozarkodina brevis – or unidentified related form
** †Ozarkodina mulleri – type locality for species
** †Ozarkodina nevadensis – type locality for species
** †Ozarkodina raridenticulata – type locality for species
** †Ozarkodina triassica – type locality for species

## P

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Palaeastraea
** †Palaeastraea decussata – or unidentified comparable form
** †Palaeastraea descussata
* †Palaeobates
** †Palaeobates shastensis – or unidentified comparable form
* †Palaeolima
** †Palaeolima newpassensis – type locality for species
* †Palaeospinax – tentative report
* †Pamiroseris
** †Pamiroseris rectilamellosa
* †Parachirognathus
** †Parachirognathus ethingtoni – type locality for species
** †Parachirognathus geiseri – type locality for species
* †Paracrochordiceras
** †Paracrochordiceras americanum
** †Paracrochordiceras mclearni – type locality for species
** †Paracrochordiceras plicatus
** †Paracrochordiceras silberlingi – type locality for species
* †Paradanubites
** †Paradanubites crassicostatus – type locality for species
* †Parafrechites
** †Parafrechites dunni – type locality for species
** †Parafrechites meeki – type locality for species
* †Paragymnites
** †Paragymnites symmetricus
* †Parahedenstroemia
** †Parahedenstroemia kiparisovae
* Fossilized skeleton of the Triassic bony fish Paralepidotus †Paralepidotus – tentative report
* †Parallelodon
* †Paranannites
** †Paranannites aspenensis
** †Paranannites mulleri
** †Paranannites slossi
* †Paranautilus
** †Paranautilus multicameratus – type locality for species
** †Paranautilus smithi – type locality for species
* †Paranevadites
** †Paranevadites furlongi – type locality for species
** †Paranevadites gabbi – type locality for species
* †Paratrachyceras
* †Paratriassoastrum
** †Paratriassoastrum crassum
* †Parussuria
** †Parussuria compressa
* †Parvidiabolus
** †Parvidiabolus onvexus – or unidentified related form
* †Parvigondolella
* †Pegmavalvula
** †Pegmavalvula triassica – type locality for species
* †Permophorus
** †Permophorus bregeri
* Life restoration of the Triassic ichthyosaur Phalarodon †Phalarodon
** †Phalarodon fraasi
* †Phloioceras
** †Phloioceras mulieri
* Pholadomya
* †Phragmotrypa – type locality for genus
** †Phragmotrypa ordinata – type locality for species
* †Piarorhynchella
** †Piarorhynchella triassica
* †Pinacophyllum
** †Pinacophyllum parallelum – or unidentified comparable form
* Pinna
* †Placites
** †Placites humboldtensis – type locality for species
* †Placunopsis
* †Plafkerium
** †Plafkerium keloense – or unidentified related form
* †Plagiostoma
** †Plagiostoma acutum – type locality for species
** †Plagiostoma striatum
* Fossils of the burrow ichnogenus Planolites †Planolites
* †Platycuccoceras
** †Platycuccoceras bonaevistae – type locality for species
** †Platycuccoceras cainense – type locality for species
** †Platycuccoceras favretense – type locality for species
** †Platycuccoceras praebalatonensis – type locality for species
** †Platycuccoceras rugosum – type locality for species
** †Platycuccoceras silberlingi – type locality for species
** †Platycuccoceras tozeri – type locality for species
* †Plectoconcha
** †Plectoconcha aequiplicata – type locality for species
** †Plectoconcha newbyi – type locality for species
* †Plectodiscus
** †Plectodiscus berlinensis – type locality for species
* †Plesiechinus
** †Plesiechinus hawkinsi – type locality for species
* †Pleurofrechites
** †Pleurofrechites johnstoni – type locality for species
* †Pleuromya
** †Pleuromya humboldtensis – type locality for species
* Fossilized shell of the Carboniferous-Triassic nautiloid cephalopod Pleuronautilus †Pleuronautilus
* †Pleuronectites
** †Pleuronectites meeki – type locality for species
** †Pleuronectites newelli – type locality for species
* Plicatula
** †Plicatula perimbricata
* †Polyacrodus
** †Polyacrodus tregoi – type locality for species
* †Polycystocoelia
** †Polycystocoelia silberlingi – type locality for species
* †Posidonia
** †Posidonia blatchleyi
** †Posidonia daytonensis – type locality for species
** †Posidonia stella – type locality for species
* †Preflorianites
** †Preflorianites toulai
* †Primatella
** †Primatella asymmetrica
** †Primatella conservativa
** †Primatella mersinensis
** †Primatella orchardi
* †Prioniodina
** †Prioniodina montellensis – type locality for species
* †Proarcestes
** †Proarcestes balfouri – type locality for species
** †Proarcestes bramantei – or unidentified comparable form
** †Proarcestes gabbi – type locality for species
** †Proarcestes nevadanus – type locality for species
* †Proclydonautilus
* †Prohungarites
** †Prohungarites lenticularis – type locality for species
** †Prohungarites submckelvei – type locality for species
* †Promyalina
* †Promysidiella
** †Promysidiella desatoyensis – type locality for species
** †Promysidiella otiosa – or unidentified related form
** †Promysidiella planirecta – type locality for species
* †Proptychites
** †Proptychites ammonoides – or unidentified comparable form
** †Proptychites haydeni
** †Proptychites pagei – type locality for species
** †Proptychites trilobatus – or unidentified comparable form
* †Proteusites
** †Proteusites fergusoni – type locality for species
** †Proteusites weitschati – type locality for species
* Fossilized shell of the Triassic ammonoid cephalopod Protrachyceras †Protrachyceras
** †Protrachyceras sikanianum – or unidentified related form
** †Protrachyceras springeri – type locality for species
* †Pseudacrochordiceras
** †Pseudacrochordiceras inyoense
* †Pseudaetomoceras
** †Pseudaetomoceras shoshonense – type locality for species
* †Pseudaspenites
** †Pseudaspenites balinii – type locality for species
* †Pseudaspidites
** †Pseudaspidites silberlingi – type locality for species
** †Pseudaspidites wheeleri
* †Pseudodanubites
** †Pseudodanubites dixiensis – type locality for species
** †Pseudodanubites halli
** †Pseudodanubites nicholsi – type locality for species
* †Pseudokeyserlingites
** †Pseudokeyserlingites guexi – type locality for species
* †Pseudolimea
** †Pseudolimea naumani
* †Pseudomonotis
** †Pseudomonotis circularis
* †Pseudoplacunopsis
** †Pseudoplacunopsis fissistriata – or unidentified related form
* †Pseudosageceras
** †Pseudosageceras augustum
** †Pseudosageceras multilobatum
* †Pseudospondylospira
** †Pseudospondylospira perplexa
* †Pseudosvalbardiceras – tentative report
** †Pseudosvalbardiceras humboldtense – type locality for species
* †Pseudotropites
** †Pseudotropites ultratriasicus
* †Psiloceras
** †Psiloceras marcouxi
** †Psiloceras pacificum
** †Psiloceras spelae
** †Psiloceras tilmanni
* †Pteronisculus
** †Pteronisculus nevadanus – type locality for species
* †Ptychites
** †Ptychites densistriatus – type locality for species
** †Ptychites evansi – type locality for species
** †Ptychites gradinarui – type locality for species
* Fossilized skeleton of the bony fish Ptycholepis †Ptycholepis – tentative report
* †Pyknotylacanthus
** †Pyknotylacanthus humboldtensis – type locality for species

## R

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Radioceras
** †Radioceras evolvens – or unidentified comparable form
** †Radioceras kraffti – or unidentified comparable form
* †Retiophyllia
** †Retiophyllia delicatula
** †Retiophyllia fenestrata
** †Retiophyllia nevadae – type locality for species
** †Retiophyllia norica
* †Rhabdoceras
** †Rhabdoceras suessi
* †Rhacophyllites
** †Rhacophyllites debilis
* †Rhaetina
** †Rhaetina gregaria – 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
** †Rhynchonella lingulata – type locality for species
* †Rhynchopterus – type locality for genus
** †Rhynchopterus obesus – type locality for species
* †Rieberites
** †Rieberites transiformis – type locality for species
* †Rieppelites
** †Rieppelites boletzkyi – type locality for species
** †Rieppelites cimeganus
** †Rieppelites shevyrevi – type locality for species

## S

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Sageceras
** †Sageceras gabbi – type locality for species
** †Sageceras walteri
* †Sagenites
** †Sagenites minaensis – type locality for species
** †Sagenites striata – type locality for species
* Fossilized skeleton of the Early Triassic-Middle Jurassic bony fish Saurichthys †Saurichthys
* †Schafhaeutlia
* †Schlotheimia
** †Schlotheimia cuevitensis – or unidentified comparable form
* †Schreinbachites
** †Schreinbachites laqueoides – or unidentified related form
* †Semibeyrichites
* †Septocardia
* †Septocardita
* †Septocarditia
* Diagram illustrating Shonisaurus (green) and Shastasaurus sikanniensis (red) with an anachronistic human to scale †Shonisaurus
** †Shonisaurus popularis
* †Sibyllonautilus
** †Sibyllonautilus fergusoni – type locality for species
* †Silberlingeria
** †Silberlingeria rubyae – type locality for species
* †Silberlingites
** †Silberlingites mulleri – type locality for species
** †Silberlingites tregoi – type locality for species
* †Silberlingitoides
** †Silberlingitoides clarkei – type locality for species
** †Silberlingitoides cricki – type locality for species
** †Silberlingitoides praecursor – type locality for species
* †Sirenites
** †Sirenites homfrayi – type locality for species
* Fossils of the red alga Solenopora †Solenopora
* †Sphaera – report made of unidentified related form or using admittedly obsolete nomenclature
** †Sphaera whitneyi – type locality for species
* †Spiriferina
** †Spiriferina alia
** †Spiriferina homfrayi – type locality for species
** †Spiriferina roundyi
* †Spirigera – or unidentified comparable form
* Spiroplectammina
* †Spondylospira
** †Spondylospira lewesensis
** †Spondylospira tricosta – type locality for species
* †Spongiomorpha
** †Spongiomorpha gibbosa
** †Spongiomorpha minor – or unidentified comparable form
** †Spongiomorpha tenuis
* †Stenopopanoceras
* †Stikinoceras
** †Stikinoceras kerri
* †Storthoceras
** †Storthoceras garfieldense – type locality for species
* †Stromatomorpha
** †Stromatomorpha califormica – or unidentified comparable form
* †Stuoresimorpha
** †Stuoresimorpha norica – or unidentified comparable form
* †Sturia
** †Sturia japonica – or unidentified comparable form
* †Styrionautilus
* †Styrites
** †Styrites tropitiformis – or unidentified comparable form
* †Subvishnuites
** †Subvishnuites stokesi
* †Sulioticeras
** †Sulioticeras intermedium – or unidentified comparable form
* †Syringoceras
** †Syringoceras spurri – type locality for species

## T

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Tetsaoceras
** †Tetsaoceras hayesi
* Life restoration of the Middle Triassic ichthyosaur Thalattoarchon †Thalattoarchon – type locality for genus
** †Thalattoarchon saurophagis – type locality for species
* †Thamnasteria
** †Thamnasteria borealis
** †Thamnasteria rectimellosa
** †Thamnasteria smithi
* †Thanamites
** †Thanamites contractus – type locality for species
* †Thecosmilia – report made of unidentified related form or using admittedly obsolete nomenclature
* †Tipperoceras – type locality for genus
** †Tipperoceras mullerense – type locality for species
* †Tmaegoceras
** †Tmaegoceras nudaries – type locality for species
* †Tozerites
** †Tozerites gemmellaroi
** †Tozerites humboldtensis – type locality for species
** †Tozerites polygyratus – type locality for species
* †Trachyceras
** †Trachyceras silberlingi – type locality for species
* †Trichites
* Fossilized shell of the Permian-Paleocene marine bivalve Trigonia †Trigonia
** †Trigonia hemisphaerica – or unidentified related form
* †Tropiceitites
** †Tropiceitites columbianus
* †Tropiceltites
* †Tropigastrites
** †Tropigastrites lahontanus – type locality for species
** †Tropigastrites louderbacki – type locality for species
* †Tropigymnites
** †Tropigymnites planorbis – or unidentified comparable form
* †Tropites
** †Tropites crassicostatus
** †Tropites latiumbilicatus
** †Tropites nevadanus
** †Tropites nodosus
** †Tropites subquadratus
* †Tropithisbites
** †Tropithisbites densicostatus
* †Tutcheria

## U

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Umbrostrea
** †Umbrostrea montiscaprilis – or unidentified comparable form
* †Unionites
** †Unionites carinata
* †Unionvillites
** †Unionvillites asseretoi – type locality for species
** †Unionvillites hadleyi – type locality for species
* †Ussuridiscus
* †Ussurites
** †Ussurites arthaberi – or unidentified comparable form
** †Ussurites detwilleri – type locality for species

## V

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Vandaites
** †Vandaites newyorkensis – type locality for species
* †Vaugonia
** †Vaugonia vancouverensis – or unidentified comparable form
* †Vavilovites
* †Vermiceras
** †Vermiceras concavum – type locality for species
** †Vermiceras densicostatum – type locality for species
** †Vermiceras mineralense – type locality for species
** †Vermiceras rursicostatum
* †Vex
** †Vex semisimplex

## W

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Wasatchites – tentative report
* †Weyla
* †Wyomingites
** †Wyomingites aplanatus
** †Wyomingites arnoldi
** †Wyomingites whiteanus

## X

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Xenoceltites
** †Xenoceltites youngi
* Fossilized shells of the ammonoid cephalopod Xenodiscus †Xenodiscus
** †Xenodiscus nevadanus

## Z

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Zeilleria
** †Zeilleria elliptica – or unidentified comparable form
* †Zieglericonus
** †Zieglericonus rhaeticum
* †Zugmayerella – type locality for genus
** †Zugmayerella incinata
** †Zugmayerella uncinata – type locality for species