# List of the Paleozoic life of Arizona

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

## A

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* B
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* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
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* U
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* X
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* †Acandylacanthus
* †Acanthopecten
** †Acanthopecten coloradoensis
* †Achistrum
** †Achistrum frizzelli
* †Aclisina – tentative report
** †Aclisina bisulcata – type locality for species
* †Acrocephalops
* †Adetognathus
** †Adetognathus gigantus
** †Adetognathus lautus
* †Aglaocrinus
** †Aglaocrinus konecnyorum – type locality for species
** †Aglaocrinus nacoensis – type locality for species
* †Aglaoglypta
** †Aglaoglypta maera
* †Alisporites
* †Alloiopteris
** †Alloiopteris sternbergii
* †Alloipteris
** †Alloipteris sternbergii
* †Allorisma – tentative report
** †Allorisma juveniles – informal
* †Alokistocare
* †Altudoceras
** †Altudoceras mckeei – type locality for species
* †Alula
** †Alula gilberti
* †Ambocoelia
* †Amelacanthus
* †Ameura
* †Amphipora
* †Amphiscapha
** †Amphiscapha proxima
** †Amphiscapha subrugosa
* †Amplexizaphrentis
* †Anisopyge
** †Anisopyge inornata
* Fossil of the Carboniferous horsetail relative Annularia †Annularia
** †Annularia asteris
** †Annularia mucronata
** †Annularia stellata
* †Anomphalus
* †Anoria
* †Antagmus
* †Anthracospirifer
** †Anthracospirifer leidyi
** †Anthracospirifer newberryi
** †Anthracospirifer occiduus
** †Anthracospirifer opimus – or unidentified comparable form
** †Anthracospirifer tanoensis
* †Antiquatonia
** †Antiquatonia portlockianus
* †Apachella – type locality for genus
** †Apachella arizonensis – type locality for species
** †Apachella franciscana – type locality for species
** †Apachella mulensis
** †Apachella prodontia
** †Apachella translirata
** †Apachella turbiniformis – type locality for species
* †Aphyllopteris
* †Arasta
** †Arasta torquata
* †Arastra – type locality for genus
** †Arastra torquata – type locality for species
* †Archaeocidaris
* Fossils of the Carboniferous-Permian bryozoan Archimedes †Archimedes
** †Archimedes confertus
** †Archimedes intermedius
** †Archimedes invaginatus
** †Archimedes lativolvis
** †Archimedes proutanus
** †Archimedes terebriformis
* †Arcochiton
** †Arcochiton richardsoni
* †Arizonella – type locality for genus
** †Arizonella allecta – type locality for species
* †Arizonerpeton – type locality for genus
** †Arizonerpeton wellsi – type locality for species
* †Astartella
** †Astartella subquadrata
* †Asterophyllites
** †Asterophyllites equisetiformis
** †Asterophyllites grandis
* †Athyris
* †Atribonium
** †Atribonium arizonensis
* †Aulametacoceras – type locality for genus
** †Aulametacoceras mckeei – type locality for species
* †Aulopora
* Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten †Aviculopecten
** †Aviculopecten bellatulus – type locality for species
** †Aviculopecten girtyi – or unidentified comparable form
** †Aviculopecten gravidus
** †Aviculopecten kaibabensis – type locality for species
* †Aviculopinna
** †Aviculopinna peracuta – tentative report

## B

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* B
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* F
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* H
* I
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* M
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* P
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* †Bakevellia
** †Bakevellia prora – type locality for species
** †Bakevellia sulcata
* †Batostomella
** †Batostomella nitidula
** †Batostomella spinulosa
* †Batostromella
* †Baxtonia
** †Baxtonia arizonensis
* †Baylea
** †Baylea coheni – type locality for species
* †Bellaclathrus – type locality for genus
** †Bellaclathrus spinosus – type locality for species
* Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon †Bellerophon
** †Bellerophon deflectus – type locality for species
** †Bellerophon huecoensis
** †Bellerophon parvicristus
** †Bellerophon sublaevis
* †Biarmeaspira
** †Biarmeaspira multilineata
* †Bicorbis – type locality for genus
** †Bicorbis arizonica – type locality for species
* †Bolaspis
** †Bolaspis aemula
* †Brachyphyllum
** †Brachyphyllum arizonicum – type locality for species
** †Brachyphyllum arizonieum – type locality for species
** †Brachyphyllum tenue – type locality for species
* †Brachythyris
** †Brachythyris chesterensis
** †Brachythyris peculiaris
* †Bradyospira – type locality for genus
** †Bradyospira johnsensis – type locality for species
* †Bransonella
** †Bransonella lingulata – tentative report
** †Bransonella nebraskensis – tentative report
** †Bransonella tribula – type locality for species
* †Brongniartites – tentative report
** †Brongniartites aliena – type locality for species
** †Brongniartites yakiensis – type locality for species
* †Bucanopsis
* †Buxtonia
** †Buxtonia arizonensis
** †Buxtonia arkansansus
** †Buxtonia arkansanus

## C

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* Fossilized stems from the Carboniferous-Permian horsetail relative Calamites †Calamites
** †Calamites cisti
** †Calamites cistiiformis
* †Callipteris
** †Callipteris arizonae – type locality for species
** †Callipteris C. flabellifera – or unidentified comparable form
** †Callipteris conferta
** †Callipteris flabellifera
** †Callipteris raymondi
* †Camarotechia
** †Camarotechia metallica
* †Camarotoechia
** †Camarotoechia metallica
** †Camarotoechia mutata
** †Camarotoechia purduei
* Fossils of the Devonian-Permian horn coral Caninia †Caninia – tentative report
** †Caninia arcuata
* †Carpolithus
* †Chilotrypa – tentative report
* †Chonetes
** †Chonetes okahomensis
** †Chonetes oklahomensis
* †Cibecuia – type locality for genus
** †Cibecuia cedarensis – type locality for species
* †Clavaspidella
** †Clavaspidella kanabensis
* †Cleiothyridina
** †Cleiothyridina orbicularis
* †Cliothyridina
** †Cliothyridina sublamellosa
* †Cloithyridina
** †Cloithyridina hirsuta
* †Complexisporites
* Fossilized shell of the Late Devonian-Permian brachiopod Composita †Composita
** †Composita deltoides
** †Composita gibbosa
** †Composita humilis
** †Composita laevis
** †Composita lewisensis
** †Composita mexicana
** †Composita ovata
** †Composita ozarkana
** †Composita subtilia
** †Composita subtilita
** †Composita trinuclea
* †Conetes
** †Conetes oklahomensis
* †Congeriomorpha – type locality for genus
** †Congeriomorpha andrusovi – type locality for species
* †Conularia
** †Conularia kaibabensis – type locality for species
* †Converrucosisporites
* †Convolutispora
* Life restoration of the Silurian-Early Devonian primitive land plant Cooksonia †Cooksonia – or unidentified comparable form
** †Cooksonia hemisphaerica
* †Cordaites
** †Cordaites principalis
* †Costellarina
** †Costellarina carlstroemi
* †Craenena
* †Cristatisporites
* †Cromyocrinus – tentative report
* †Crurithyris
** †Crurithyris planoconvexa
* †Cupularostrum
** †Cupularostrum saxatilis
** †Cupularostrum saxitalis
* †Cupulo – or unidentified comparable form
** †Cupulo rostrum
* †Cyclocarpon
** †Cyclocarpon angelicum – type locality for species
* †Cycloceras
** †Cycloceras randolphensis
* †Cyclopteris
** †Cyclopteris orbicularis
* †Cyclozyga
** †Cyclozyga micra
* †Cylindritopsis
** †Cylindritopsis insolitus – type locality for species
* †Cymatochiton – tentative report
** †Cymatochiton kaibabensis – type locality for species
* †Cyperites
* Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer †Cyrtospirifer
** †Cyrtospirifer kindlei
** †Cyrtospirifer whitneyi
* †Cystodictya

## D

* A
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* F
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* I
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* L
* M
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* P
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* †Daubreeia
* †Delaria
** †Delaria sevilloidia – type locality for species
** †Delaria snowi
* †Delocrinus
* †Deltodus
** †Deltodus angularis
** †Deltodus mercurei
** †Deltodus sublaevis
* †Deltopecten
** †Deltopecten monroensis
** †Deltopecten tahlequahensis
* †Derbyia
** †Derbyia crassa
** †Derbyia robusta – or unidentified comparable form
* †Diablodontus – type locality for genus
** †Diablodontus michaeledmundi – type locality for species
* †Diaphragmus
** †Diaphragmus fasciculatus
* †Dichotrypa
** †Dichotrypa elegans
* †Dicromyocrinus
** †Dicromyocrinus beusi – type locality for species
** †Dicromyocrinus carrizoensis – type locality for species
* †Dictyoclostus
** †Dictyoclostus arcuatus
* †Dictyonina
* †Dielasma
** †Dielasma burlingtonensis
** †Dielasma formosum
** †Dielasma illinoisense
** †Dielasma shumardanum
** †Dielasma sinuatum
* †Dielasmoides
** †Dielasmoides bisinuatus
* †Disphyllum
* †Ditomopyge
* †Donaldina
* †Donaldospira
** †Donaldospira geminocarinata – type locality for species
* †Dyoros
** †Dyoros kaibabensis
** †Dyoros subliratus

## E

* A
* B
* C
* D
* E
* F
* G
* H
* I
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* L
* M
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* †Echinaria
** †Echinaria semipunctata
* †Echinauris
** †Echinauris newberryi
** †Echinauris subhorrida
* †Echinoconchus
** †Echinoconchus biseriatus
** †Echinoconchus elegans
** †Echinoconchus rodeoensis
* †Echinocrinus
** †Echinocrinus dininnii – or unidentified related form
** †Echinocrinus trudifer
* †Edmondia
** †Edmondia crassa
** †Edmondia fountainensis
** †Edmondia genevievensis
** †Edmondia gibbosa – or unidentified comparable form
* †Eirmocrinus
** †Eirmocrinus brewi – type locality for species
* †Elasmonema
* †Elfridia – type locality for genus
** †Elfridia bulbidens – type locality for species
* Fossil of the Cambrian trilobite Elrathia †Elrathia
* †Eltovaria
** †Eltovaria bursiformis – type locality for species
* †Endelocrinus
* †Endosporites
* †Ensiferites
** †Ensiferites brandenburgi – type locality for species
* †Eoastarte
** †Eoastarte subcircularis
* Eocaudina
** †Eocaudina marginata
* †Eocrinus
* †Eomarginifera
** †Eomarginifera adairensis
* †Eridopora
** †Eridopora macrostoma
** †Eridopora occidentalis
* †Euconoapira
* †Euconospira
** †Euconospira cryptolirata – type locality for species
** †Euconospira missouriensis – or unidentified comparable form
* †Eumetria
** †Eumetria vera
** †Eumetria verneuilana
* Fossilized shell of the Silurian-Permian sea snail Euomphalus †Euomphalus
** †Euomphalus cornudanus
** †Euomphalus kaibabensis – type locality for species
** †Euomphalus similis
** †Euomphalus spergenense
** †Euomphalus subplanus
** †Euomphalus utahensis
* †Euphemites
** †Euphemites aequisulcatus – type locality for species
** †Euphemites lentiformus
* †Euphemitopsis
** †Euphemitopsis multinodosa
** †Euphemitopsis subpapillosa

## F

* A
* B
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* †Fenestella
** †Fenestella morrowensis
** †Fenestella multispinosa
* †Fistulipora
* †Flexaria
* †Florinites
* †Floweria
** †Floweria chemungensis
** †Floweria prava
* †Frnestella
** †Frnestella serratula
** †Frnestella tenax
* Assemblage of fossils of Silurian-Permian fusulinid foraminiferans †Fusulina
** †Fusulina socorroensis

## G

* A
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* †Gamphalosia
* †Gingkophytopsis
* †Girtyella
** †Girtyella brevilobata
** †Girtyella indianensis
* †Girtypora
** †Girtypora maculata – type locality for species
* †Girtyspira
* †Glabrocingulum
** †Glabrocingulum coronatum – type locality for species
** †Glabrocingulum gibber – type locality for species
** †Glabrocingulum laeviliratum – type locality for species
* Life restoration of the Carboniferous shark Glikmanius †Glikmanius
** †Glikmanius myachkovensis
** †Glikmanius occidentalis
* †Globular
** †Globular eocrinoid – tentative report
* †Glossopleura
* †Glyphaspis
** †Glyphaspis tecta
* †Glyptopora
* †Glyptospira – type locality for genus
** †Glyptospira cristulata – type locality for species
** †Glyptospira huecoensis
* †Glyptotomaria
* Life restoration of the Permian lungfish Gnathorhiza †Gnathorhiza – or unidentified comparable form
** †Gnathorhiza serrata
* †Gomphostrobus
** †Gomphostrobus bifidus
** †Gomphostrobus G. bifidus – or unidentified comparable form
* †Goniasma
** †Goniasma terebra
* †Goniophora
** †Goniophora cristata – type locality for species
* †Grammatodon
** †Grammatodon politus
* †Gymnospermous
* †Gypidula

## H

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* †Haplistion
** †Haplistion armstrongi
* †Hastimima – tentative report
* †Hedeia
* †Heslerodus
** †Heslerodus divergens
* Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone †Hexagonaria
** †Hexagonaria minuta
** †Hexagonaria occidens
** †Hexagonaria palmeri
* †Hostimella
** †Hostimella hostimensis
* †Hustedia
* †Hyolithes

## I

* A
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* †Ianthinopsis
* †Icriodus
** †Icriodus brevis
* †Idiognathodus
** †Idiognathodus delicatus
** †Idiognathodus humerus
* †Indospirifer
** †Indospirifer orestes
* †Iowaphyllum
** †Iowaphyllum johanni
** †Iowaphyllum nisbeti

## J

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* †Janeia

## K

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* †Kaibabella – type locality for genus
** †Kaibabella curvilenata – type locality for species
* †Kaibabvenator – type locality for genus
** †Kaibabvenator swiftae – type locality for species
* †Kingopora
** †Kingopora portalensis
* †Kinishbia – type locality for genus
** †Kinishbia nodosa – type locality for species
* †Knorria
* †Knoxisporites
* †Kochina – tentative report
** †Kochina angustata
* Fossil of the Cambrian trilobite Kootenia †Kootenia
** †Kootenia mckeei
* †Kutorginella
** †Kutorginella meridionalis

## L

* A
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* †Laevigatosporites
* †Lagarodus
** †Lagarodus angustus
* †Leioproductus
** †Leioproductus plicatus
* †Lepetopsis – or unidentified comparable form
* Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911). †Lepidodendron
** †Lepidodendron aculeatum
** †Lepidodendron mannabachense
** †Lepidodendron volkmannianum
* †Lepidostrobophyllum
* †Lepidostrobus
** †Lepidostrobus ornatus – or unidentified comparable form
* †Leptalosia
* †Leptodesma
** †Leptodesma carboniferum
** †Leptodesma robustum
* †Levidentalium
* †Lingula
* Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella †Lingulella
** †Lingulella kanabensis
** †Lingulella zetus
* †Linoproductus
** †Linoproductus altonensis
** †Linoproductus gallatinensis
** †Linoproductus nodosus
** †Linoproductus ovatus
** †Linoproductus prattenianus
** †Linoproductus pumilis
* †Liroceras
* †Lissochonetes
* †Lophamplexus – tentative report
* †Lophophyllum – report made of unidentified related form or using admittedly obsolete nomenclature

## M

* A
* B
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* I
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* †Manzanella
** †Manzanella cryptodentata
* †Marginifera – tentative report
* †Meekella
** †Meekella occidentalis – type locality for species
* †Meekopinna
** †Meekopinna sagitta – type locality for species
* †Meekopora
** †Meekopora parilis
* †Meekospira
** †Meekospira knighti – type locality for species
** †Meekospira sulcata – type locality for species
* †Megactenopetalus – type locality for genus
** †Megactenopetalus kaibabanus – type locality for species
* Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras †Metacoceras
** †Metacoceras bowmani – type locality for species
** †Metacoceras unklesbayi – type locality for species
* †Metacromyocrinus
** †Metacromyocrinus holdenvillensis – or unidentified comparable form
* †Michelina
* †Microdoma
* †Microreticulatisporites
* †Modiolus
** †Modiolus fountainensis
** †Modiolus illinoiensis
* †Mourlonia – tentative report
** †Mourlonia cancellata – type locality for species
* †Multithecopora – tentative report
* †Murchisonia
* †Myalina
** †Myalina adunca – type locality for species
** †Myalina angulata
** †Myalina congeneris
** †Myalina monroensis
** †Myalina nacoensis – type locality for species
* †Myoconcha

## N

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* †Nanoskalme – type locality for genus
** †Nanoskalme natans – type locality for species
* Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis †Naticopsis
** †Naticopsis apachensis – type locality for species
** †Naticopsis kaibabensis – type locality for species
** †Naticopsis permica – type locality for species
** †Naticopsis waterlooensis
* †Neosaivodus – type locality for genus
** †Neosaivodus flagstaffensis – type locality for species
* †Neospirifer – tentative report
** †Neospirifer dunbari
* †Neuropteridium – tentative report
* Fronds of the Carboniferous seed fern Neuropteris †Neuropteris
** †Neuropteris heterophylla
** †Neuropteris missouriensis
** †Neuropteris scheuchzeri
* †Nisusia
** †Nisusia kanabensis
** †Nisusia noblei
* †Novoameura
** †Novoameura mckeei – type locality for species
* Nucula
** †Nucula illinoisensis
** †Nucula platynotus
** †Nucula randolphensis
* Nuculana
** †Nuculana curta
* †Nuculavus
** †Nuculavus levatiformis
* †Nuculopsis

## O

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* M
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* †Odontopteris
** †Odontopteris schlotheimii
** †Odontopteris schlotheimiii
* †Olenellus
* †Omphalotrochus
** †Omphalotrochus cochisensis
** †Omphalotrochus hessensis
* Life restoration of the Carboniferous-Permian amphibian Ophiderpeton †Ophiderpeton
** †Ophiderpeton swisshelmense – type locality for species
* †Orbiculoidea
** †Orbiculoidea meekana
** †Orbiculoidea missouriensis – or unidentified comparable form
* †Oriocrassatella
* †Orodus
* †Orthacanthus
** †Orthacanthus donnelljohnsi – type locality for species
* †Orthonema
** †Orthonema striatonodosum – type locality for species
* †Orthonychia
** †Orthonychia striatulus
* †Orthotetes
** †Orthotetes kaskaskiensis
** †Orthotetes keokuk
** †Orthotetes subglobosus
* †Ozawainella – tentative report
** †Ozawainella inflata

## P

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* †Pachyaspis
* †Pachyphyllum
** †Pachyphyllum woodmani
* Fossilized foliage of the Carboniferous-Late Cretaceous plant Pagiophyllum †Pagiophyllum
** †Pagiophyllum dubium – type locality for species
* †Paladin
* †Palaeocapulus
** †Palaeocapulus acutirostre
* †Palaeolima
** †Palaeolima chesterensis
** †Palaeolima retifera – or unidentified comparable form
* †Palaeoneilo
* †Palaeostachya
* †Palaeostylus
** †Palaeostylus giganticus – type locality for species
* †Paleotaxites – type locality for genus
** †Paleotaxites praecursor – type locality for species
* †Paleyoldia
** †Paleyoldia pumilis
* †Palmatolepis
** †Palmatolepis triangularis
* †Paraconularia
** †Paraconularia kohli – type locality for species
* †Paradelocrinus
** †Paradelocrinus nederi
* †Parajuresania
** †Parajuresania nebrascensis
* †Parallelodon
** †Parallelodon anaklastum – type locality for species
** †Parallelodon illinoisensis
** †Parallelodon minima
* †Paraparchites
* †Parapenascoceras
** †Parapenascoceras rotundatum
** †Parapenascoceras sanandreasense – or unidentified comparable form
* †Parasmithiphyllum
** †Parasmithiphyllum breviseptatum
* †Parehmania
** †Parehmania nitida
* †Paterina
** †Paterina crenistria
* †Paurorhyncha
** †Paurorhyncha cooperi
** †Paurorhyncha endlichi
* Fossils of the Late Devonian-Permian fern-like fronds Pecopteris †Pecopteris
** †Pecopteris aspera – or unidentified comparable form
** †Pecopteris cyathea
** †Pecopteris lamuriana
* †Penascoceras
** †Penascoceras bradyi – type locality for species
* †Peneckiella
* †Peniculauris
** †Peniculauris bassi
** †Peniculauris ivesi
* Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites †Pentremites
* †Permophorus
** †Permophorus albequus
** †Permophorus mexicanus – or unidentified comparable form
** †Permophorus subcostatus – tentative report
* †Pernotrochus – type locality for genus
** †Pernotrochus arizonensis – type locality for species
* †Perrinites
** †Perrinites hilli
* †Petalodus
** †Petalodus ohioensis
* †Petrodus
** †Petrodus patelliformis
* †Phacellophyllum
* †Phestia
** †Phestia perumbonata
* †Phillipsia
* Life restoration of the Carboniferous-Permian amphibian Phlegethontia. †Phlegethontia
** †Phlegethontia phanerhapha – type locality for species
* †Phricodothyris
* †Physonemus
* †Pinna
* †Pityosporites
* †Plagioglypta
* †Planotectus – tentative report
* †Platyceras
* †Platyworthenia
** †Platyworthenia delicata
* †Polidevcia
** †Polidevcia obesa
* Various conodont elements of Polygnathus †Polygnathus
** †Polygnathus angustidiscus
** †Polygnathus normalis
* †Polypora
** †Polypora cestriensis
** †Polypora spinulifera
* †Pontisia
* †Popanoceras – report made of unidentified related form or using admittedly obsolete nomenclature
* †Porostictia
** †Porostictia perchaensis
* †Potonieisporites
* †Prodentalium
** †Prodentalium canna
* †Prodiozoptyxis
* †Productus
** †Productus indianensis
** †Productus inflatus
** †Productus marginicinctus
** †Productus scitulus
* †Promytilus
** †Promytilus retusus – type locality for species
* †Protoconchioides
** †Protoconchioides hermitensis – type locality for species
* †Protohaploxypinus
* †Pseudoatrypa
** †Pseudoatrypa devoniana
* †Pseudoconocardium
* †Pseudodielasma – tentative report
* †Pseudogastrioceras – tentative report
* †Pseudomonotis
** †Pseudomonotis likharevi – or unidentified comparable form
* †Pseudorthoceras
** †Pseudorthoceras knoxense
* †Pseudozygopleura
** †Pseudozygopleura knighti – type locality for species
* †Psygmophyllum
* †Ptarmigania
* †Pterinopecten
* †Ptyonius – tentative report
** †Ptyonius olisthmonaias – type locality for species
* †Pugnoides
** †Pugnoides ottumwa
* †Pulchratia – tentative report
** †Pulchratia picuris
* †Punctatisporites
* †Punctospirifer
** †Punctospirifer subtextus
** †Punctospirifer transversus

## 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
* †Raistrickia
* †Rectifenestella
** †Rectifenestella tenax
* †Reticularia
** †Reticularia gonionota
** †Reticularia setigera
* †Reticularina
* †Retispira
** †Retispira modesta
** †Retispira monronensis
** †Retispira undulata – type locality for species
* †Rhabdomeson
* †Rhineoderma
** †Rhineoderma dinglensis
* †Rhipidomella
** †Rhipidomella burlingtonensis
** †Rhipidomella dubia
** †Rhipidomella thiemei
* †Rhizomaspora
* †Rhombopora
** †Rhombopora decipiens
** †Rhombopora persimilis
** †Rhombopora tenuirama
** †Rhombopora wortheni
* †Rhomopora
* †Rhynchopora
** †Rhynchopora illinoisensis
* †Rimmyjimina – type locality for genus
** †Rimmyjimina arcula – type locality for species
* †Rivularites
** †Rivularites permiensis – type locality for species
* †Rota
** †Rota martini
* †Rotiphyllum
* †Rugatia
** †Rugatia occidentalis
* †Rugosa

## 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
* †Saivodus
* †Sallya – tentative report
** †Sallya lirata – type locality for species
* †Sanguinolites
* †Scaphellina – type locality for genus
** †Scaphellina concinna – type locality for species
* †Schizodus
** †Schizodus amplus
** †Schizodus batesvillensis
** †Schizodus brannerianus
** †Schizodus canalis
** †Schizodus chesterensis
** †Schizodus drpressus
** †Schizodus supaiensis – type locality for species
** †Schizodus texanus
* †Schizophoria
** †Schizophoria altirostris
** †Schizophoria australis
* †Schopfipollenites
* †Scoyenia
** †Scoyenia gracilis – type locality for species
* †Selenimyalina
* †Septimyalina
* †Septopora
** †Septopora cestriensis
** †Septopora decipiens
** †Septopora subquadrans
* A living Serpula, or calcareous tubeworm Serpula
** †Serpula helicalis – type locality for species
* †Shansiella
** †Shansiella beckwithana – or unidentified comparable form
* †Shark
** †Shark teeth
* †Smithiphyllum
** †Smithiphyllum martinense
* Solemya
** †Solemya parallella
* †Soleniscus
** †Soleniscus philipi – type locality for species
* †Solenomorpha – report made of unidentified related form or using admittedly obsolete nomenclature
* †Solenopleura
* †Solenopleurella
** †Solenopleurella diligens
** †Solenopleurella erosa
** †Solenopleurella porcata
* †Spathognathodus
** †Spathognathodus coloradoensis
* †Speriferina
** †Speriferina spinosa
* †Sphenophyllum
** †Sphenophyllum gilmorei – type locality for species
** †Sphenophyllum oblongifolium
* †Sphenopteris
** †Sphenopteris S. striata – or unidentified comparable form
** †Sphenopteris striata
* †Spififer
** †Spififer bifurcatus
* †Spinocyrtia
* Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer †Spirifer
** †Spirifer arizonensis
** †Spirifer bifurcata
** †Spirifer bifurcatus
** †Spirifer centronatus
** †Spirifer pellaensis
** †Spirifer rostellatus
** †Spirifer tenuicostatus
* †Spiriferellina
** †Spiriferellina hilli
* †Spiriferina
** †Spiriferina salemensis
** †Spiriferina spinosa
* †Squamularia – report made of unidentified related form or using admittedly obsolete nomenclature
* †Stegocoelia
** †Stegocoelia quadricostata – type locality for species
* †Stenodiscus – tentative report
* †Stenoscisma
** †Stenoscisma bisinuata
** †Stenoscisma explanata
* Fossil preserved in situ of a Carboniferous tree-like club moss relative with attached Stigmaria rhizome system †Stigmaria
** †Stigmaria ficoides
* †Straparollus
** †Straparollus ophirensis
* †Streblopteria
** †Streblopteria simpliciformis
* †Streblotrypa
** †Streblotrypa nicklesi
* †Strianematina – type locality for genus
** †Strianematina pulchrelirata – type locality for species
* †Striatites
* †Striatosaccites
* †Stroboceras
* †Strophonelloides
* †Strophostylus
** †Strophostylus splendens
* †Supaia – type locality for genus
** †Supaia anomala – type locality for species
** †Supaia breviloba – type locality for species
** †Supaia compacta – type locality for species
** †Supaia linearifolia – type locality for species
** †Supaia merriami – type locality for species
** †Supaia rigida – type locality for species
** †Supaia sturdevantii – type locality for species
** †Supaia subgoepperti – type locality for species
** †Supaia thinnfeldioides – type locality for species
* †Synarmocrinus
** †Synarmocrinus carrizoensis – type locality for species
* Fossil of the Devonian tabulate coral Syringopora †Syringopora
* †Syringospira
** †Syringospira prima

## 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
* †Tabulipora
** †Tabulipora paradisensis
** †Tabulipora tuberculata
* †Tabulophyllum
* †Taeniopteris
** †Taeniopteris angelica – type locality for species
** †Taeniopteris coriacea
** †Taeniopteris eckhardti – or unidentified comparable form
** †Taeniopteris newberriana
** †Taeniopteris T. newberriana – or unidentified comparable form
* †Tainoceras
** †Tainoceras duttoni
** †Tainoceras schellbachi – type locality for species
* †Taxites
* †Tenticospirifer
** †Tenticospirifer cyrtinaformis
** †Tenticospirifer cyrtinoformis
** †Tenticospirifer cytinoformis
* †Thamniscus
** †Thamniscus furcillatus
* †Thamnopora
* †Torynifer
** †Torynifer spinosus
* †Trapezophyllum
* Life restoration of the Carboniferous-Triassic freshwater shark Triodus †Triodus
** †Triodus elpia – type locality for species
* †Triplophyllum
* †Triquitrites
* †Tupus
** †Tupus gilmorei – type locality for species
** †Tupus whitei – type locality for species
* †Turbonopsis
** †Turbonopsis apachiensis
* †Tusayana – type locality for genus
** †Tusayana cibola – type locality for species

## 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
* †Ullmannia
** †Ullmannia frumentaria

## 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
* †Venustodus
** †Venustodus leidyi
* †Verrucosisporites
* Restoration of the Permian trilobite Vidria †Vidria
** †Vidria contendens – type locality for species
* †Voltzia
** †Voltzia dentiloba – type locality for species

## 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
* †Waagenella
** †Waagenella crassus
* †Waagenoconcha
* Fossilized foliage of the Carboniferous-Permian conifer Walchia †Walchia
** †Walchia dawsoni – type locality for species
** †Walchia gracillima – type locality for species
** †Walchia hypnoides
** †Walchia piniformis
* †Walpia
** †Walpia hermitensis – type locality for species
* †Wardia
* †Warthia
** †Warthia crassus
* †Wedekindellina
** †Wedekindellina matura – or unidentified comparable form
* †Wellerella
* †Wilkingia
** †Wilkingia terminale
** †Wilkingia terminalis
* †Worthenia
** †Worthenia arizonensis – type locality for species
** †Worthenia corrugata – type locality for species

## Y

* 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
* †Yakia – type locality for genus
** †Yakia heterophylla – type locality for species
* †Yarravia
** †Yarravia gorelovii
* Yoldia