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

 * †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
 * Calamitaceae - Annularia stellata.JPG †[[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
 * Fenestellidae - Archimedes species.JPG]] †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
 * Aviculopecten subcardiformis01.JPG †[[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

 * †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
 * Bellerophon umbilicalis.jpg †[[Bellerophon (genus)|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

 * Calamites stems.JPG †[[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
 * Caninia torquia coral KGS.jpg]] †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
 * Compositafossil.jpg †[[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
 * Cooksonia pertoni.png †[[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
 * Cyrtospirifer verneuili duo.jpg †[[Cyrtospirifer]]
 * †Cyrtospirifer kindlei
 * †Cyrtospirifer whitneyi
 * †Cystodictya

D

 * †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

 * †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
 * ElrathiakingiUtahWheelerCambrian.jpg †[[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
 * Euomphalus fossil cropped.png †[[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

 * †Fenestella
 * †Fenestella morrowensis
 * †Fenestella multispinosa
 * †Fistulipora
 * †Flexaria
 * †Florinites
 * †Floweria
 * †Floweria chemungensis
 * †Floweria prava
 * †Frnestella
 * †Frnestella serratula
 * †Frnestella tenax
 * Fusulinid limestone, Upper Pennsylvanian; Elk County KS.jpg †Fusulina
 * †Fusulina socorroensis

G

 * †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
 * Glikmanius1DB.jpg †[[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
 * GnathorhizaDB.jpg †[[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

 * †Haplistion
 * †Haplistion armstrongi
 * †Hastimima – tentative report
 * †Hedeia
 * †Heslerodus
 * †Heslerodus divergens
 * Hexagonaria percarinata close view.JPG †[[Hexagonaria]]
 * †Hexagonaria minuta
 * †Hexagonaria occidens
 * †Hexagonaria palmeri
 * †Hostimella
 * †Hostimella hostimensis
 * †Hustedia
 * †Hyolithes

I

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

J

 * †Janeia

K

 * †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
 * Kootenia fossil cropped.png †[[Kootenia]]
 * †Kootenia mckeei
 * †Kutorginella
 * †Kutorginella meridionalis

L

 * †Laevigatosporites
 * †Lagarodus
 * †Lagarodus angustus
 * †Leioproductus
 * †Leioproductus plicatus
 * †Lepetopsis – or unidentified comparable form
 * Stigmaria Heimans.jpg †[[Lepidodendron]]
 * †Lepidodendron aculeatum
 * †Lepidodendron mannabachense
 * †Lepidodendron volkmannianum
 * †Lepidostrobophyllum
 * †Lepidostrobus
 * †Lepidostrobus ornatus – or unidentified comparable form
 * †Leptalosia
 * †Leptodesma
 * †Leptodesma carboniferum
 * †Leptodesma robustum
 * †Levidentalium
 * †Lingula
 * Lingulella caelata 1.png †[[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

 * †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
 * Metacoceras discoideum 01.jpg †[[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

 * †Nanoskalme – type locality for genus
 * †Nanoskalme natans – type locality for species
 * Neritopsidae - Naticopsis.JPG †[[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
 * Neuropteris PAMuseum.jpg †[[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

 * †Odontopteris
 * †Odontopteris schlotheimii
 * †Odontopteris schlotheimiii
 * †Olenellus
 * †Omphalotrochus
 * †Omphalotrochus cochisensis
 * †Omphalotrochus hessensis
 * Ophiderpeton BW.jpg †[[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

 * †Pachyaspis
 * †Pachyphyllum
 * †Pachyphyllum woodmani
 * [[File:Pagiophyllum sp. - Naturhistorisches Museum, Braunschweig, Germany - DSC05070 cropped.jpg|thumb|upright=0.659|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
 * Pecopteris villosa.jpg †[[Pecopteris]]
 * †Pecopteris aspera – or unidentified comparable form
 * †Pecopteris cyathea
 * †Pecopteris lamuriana
 * †Penascoceras
 * †Penascoceras bradyi – type locality for species
 * †Peneckiella
 * †Peniculauris
 * †Peniculauris bassi
 * †Peniculauris ivesi
 * Pentremites Glen Dean Fm KY.jpg †[[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
 * Phlegethontia.jpg  †[[Phlegethontia]]
 * †Phlegethontia phanerhapha – type locality for species
 * †Phricodothyris
 * †Physonemus
 * †Pinna
 * †Pityosporites
 * †Plagioglypta
 * †Planotectus – tentative report
 * †Platyceras
 * †Platyworthenia
 * †Platyworthenia delicata
 * †Polidevcia
 * †Polidevcia obesa
 * Polygnathus Pa elements.png †[[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

 * †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

 * †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
 * Serpula vermicularis 2.jpg [[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
 * Spirifer perlamosus pedunculate valve.jpg †[[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
 * Lycopsid joggins mcr1.JPG †[[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
 * Syringoporid.jpg †[[Syringopora]]
 * †Syringospira
 * †Syringospira prima

T

 * †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
 * Triodus1db.jpg †[[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

 * †Ullmannia
 * †Ullmannia frumentaria

V

 * †Venustodus
 * †Venustodus leidyi
 * †Verrucosisporites
 * Vidria cropped.png †[[Vidria]]
 * †Vidria contendens – type locality for species
 * †Voltzia
 * †Voltzia dentiloba – type locality for species

W

 * †Waagenella
 * †Waagenella crassus
 * †Waagenoconcha
 * Walchia piniformis.jpg †[[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

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