This list of the Paleozoic life of Pennsylvania contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Pennsylvania and are between 538.8 and 252.17 million years of age.
A
- †Acanthopecten
- †Acanthopecten carboniferous
- †Acidaspis
- †Acidaspis cincinnatiensis
- †Acrothele
- †Acrothele decipiens
- †Acrothele yorkensis
- †Acrotreta
- †Actinomylacris
- †Actinomylacris similis – type locality for species
- †Actinopteria
- †Actinopteria boydi
- †Actinopteria boydii
- †Actinopteria decussata
- †Adelphobolbina
- †Adelphobolbina medialis
- †Adiantites
- †Adiantites mirabilis
- †Adiantites spectabilis – type locality for species
- †Adiantites ungeri – type locality for species
- †Adiatites
- †Adiatites cyclopteroides – type locality for species
- †Adiatites spectabilis – type locality for species
- †Aechmina
- †Agassizocrinus
- †Ageleodus
- †Ageleodus pectinatus
- †Aglaoglypta
- †Aglaoglypta maera
- †Aglaoglypta nactoides
- †Agnostus
- †Alcicornopteris
- †Alcicornopteris altoonensis – type locality for species
- †Alcicornopteris anthracitica – type locality for species
- †Alethopteris
- †Alethopteris densinervosa
- †Alethopteris ingbertensis
- †Alethopteris lonchitifolia
- †Alethopteris missouriensis
- †Alethopteris serli
- †Alethopteris westphalensis
- †Allanella
- †Allanella tullius
- †Alokistocare
- †Alokistocare aoris – type locality for species
- †Alokistocare nasutum – type locality for species
- †Ambocoelia
- †Ambocoelia gregaria
- †Ambocoelia umbonata
- †Amboneura – type locality for genus
- †Amboneura klosei – type locality for species
- †Americaspis
- †Amphiscapha
- †Amphiscapha catilloides
- †Amphissites
- †Anastomopora
- †Ancyrospora
- †Aneurospora
- †Aneurospora greggsii
- †Anisotrypa
- †Ankoura
- †Ankoura apicalis
- †Ankoura orbiculata – or unidentified comparable form
- †Ankoura sublettensis
- †Anomalocaris
- †Anomalocaris lineata
- †Anomomylacris – type locality for genus
- †Anomomylacris cubitalis – type locality for species
- †Anoplea
- †Anoplea nucleata
- †Anoplotheca
- †Anthracospirifer
- †Aparchites
- †Aparchites subrotunda
- †Aphthoroblattina
- †Aphthoroblattina fascigera – type locality for species
- †Aphyllum
- †Aphyllum fascicularium
- †Archaeopteridium
- †Archaeopteridium bellasylviana – type locality for species
- †Archaeopteris
- †Archaeopteris halliana
- †Archaeopteris latifolia
- †Archaeopteris macilenta
- †Archaeopteris minor
- †Archaeopteris roemeriana – or unidentified comparable form
- †Archaeopteris rogersi
- †Archaeosperma
- †Archaeosperma arnoldii
- †Archaeotriletes
- †Archaeotriletes senticosus
- †Archeopteris
- †Archeopteris latifolia
- †Archimylacris
- †Archimylacris parallelum
- †Archinacella
- †Armathyraster
- †Armathyraster paradoxis
- †Arthrophycus
- †Articulatae
- †Asaphiscus
- †Asaphiscus glaber
- †Asemoblatta – type locality for genus
- †Asemoblatta pennsylvanica – type locality for species
- †Astartella
- †Astartella vera
- †Atalotaenia – type locality for genus
- †Atalotaenia adela – type locality for species
- †Ateleocystites
- †Ateleocystites huxleyi
- †Athyris
- †Athyris angelica
- †Athyris spiriferiodes
- †Athyris spiriferoides
- †Atimoblatta – type locality for genus
- †Atimoblatta curvipennis – type locality for species
- †Atimoblatta flexuosa – type locality for species
- †Atimoblatta reducta – type locality for species
- †Atlanticocoelia
- †Atlanticocoelia acutiplicata
- †Atrypa
- †Atrypa recticularis
- †Atrypa reticularis
- †Aulocystis
- †Auroraspora
- †Auroraspora hyalina
- †Auroraspora macra
- †Auroraspora solisorta
- †Auroraspora torquata
- †Aviculopecten
- †Aviculopecten bellus
- †Aviculopecten equilatera
- †Aviculopecten occidentalis
B
- †Bactrites
- †Barbclabornia
- †Barbclabornia luedersensis
- †Barinophyton
- †Barinophyton citrulliforme
- †Barinophyton obscurum
- †Bathyuriscus
- †Batostoma
- †Bellerophon
- †Bellerophon clarki
- †Bellerophon nactus
- †Bembexia
- †Bembexia laevis
- Berenicea
- †Beyrichoceratoides
- †Beyrichoceratoides lunatus
- †Bisporangiostrobus
- †Bisporangiostrobus harrisii
- †Blainia
- †Blainia buttsi – type locality for species
- †Blairella
- †Blairella triangularis – type locality for species
- †Blattoidea
- †Blattoidea schucherti – type locality for species
- †Blountia
- †Blountia prolifica – type locality for species
- †Blountia waddlensis
- †Blountia warriorensis – type locality for species
- †Bollia
- †Bollia hama
- †Bollia hindei
- †Bollia planofibra
- †Bollia spinomuralis
- †Bollia ungula
- †Bolllia
- †Bolllia ungula
- †Bonneterrina
- †Bonneterrina aspinosa – type locality for species
- †Bonnia
- †Bonnia bubaris
- †Bonnia capito
- †Bonnia senecta – tentative report
- †Bonniella
- †Bonniella yorkensis
- †Bothriolepis
- †Bothriolepis nitida
- †Bothriolepis nitidus
- †Brachycycloceras
- †Brachycycloceras curtum
- †Brachymylacris
- †Brachymylacris bassleri – type locality for species
- †Brachymylacris elongata – type locality for species
- †Brachymylacris rotundata – type locality for species
- †Bucanopsis
- †Bufina
- †Bufina bicornuta
- †Burnetiella
- †Burnetiella ectypa
- †Burnetiella urania
- †Buttisia
- †Buttisia drabensis
- †Buttsia
- †Buttsia completa
- †Buttsia drabensis
- †Bynumia
- †Bynumia terrenda
- †Bynumina
- †Bynumina terrenda
- †Bynumina type locality for species – informal
- †Bynuminia
- †Bynuminia terrenda
- †Byronia
- †Byssonychia – tentative report
- †Byssonychia vera – or unidentified comparable form
- Bythocypris
C
- †Calathiops
- †Calathiops pottsvillensis – type locality for species
- †Calathospongia
- †Calathospongia carceralis
- †Calathospongia carlli
- †Calathospongia tidioutensis
- †Callixylon
- †Caloneurella – type locality for genus
- †Caloneurella carbonaria – type locality for species
- †Calvibembexia
- †Calvibembexia sulcomarginata
- †Camaraspis
- †Camaraspis convexa
- †Camarotoechia
- †Camarotoechia constricta
- †Camarotoechia prolifica
- †Camarotoechia saxatilis
- †Camerella
- †Camptostroma
- †Camptostroma roddyi
- †Cardiocarpon
- †Cardiocarpon phillipsi – type locality for species
- †Cariniferella
- †Cariniferella carinata
- †Cariniferella tioga
- †Carydium
- †Carydium bellastriatum
- †Cavellina
- †Cavellina planoprocliva
- †Cavusgnathus
- †Centronella
- †Ceramopora
- †Ceramopora incondita
- †Ceratopsis
- †Ceratopsis chambersi
- †Ceriocrinus
- †Chalepomylacris – type locality for genus
- †Chalepomylacris pulchra – type locality for species
- †Chancelloria
- †Chancelloria yorkensis
- †Chancia
- †Cheilocephalus
- †Cheilocephalus quadratus – type locality for species
- †Chonetes
- †Chonetes buttsi
- †Chonetes hemisphericus
- †Chonetinella
- †Chonetinella verneuilana
- †Cincinnaticrinus
- †Cincinnetina
- †Cladopora
- †Cladopora seriata
- †Cleiothyridina
- †Cliffia
- †Cliffia lataegenae
- †Cliffia latagenae
- †Climacograptus
- †Climacograptus typicalis
- †Cobaloblatta – type locality for genus
- †Cobaloblatta simulans – type locality for species
- †Coccosteus
- †Coccosteus macromus – type locality for species
- †Coelacanthus
- †Coleolus
- †Colpodexylon
- †Colpodexylon deatsii
- †Colpomya
- †Colpomya faba
- †Comanchia
- †Comanchia amplooculata
- †Composita
- †Conaspis
- †Conotheca
- †Conotheca australiensis – or unidentified comparable form
- †Conularia
- †Conularia trentonensis – tentative report
- †Convolutispora
- †Convolutispora opressa – or unidentified comparable form
- †Coosella
- †Coosella convexa – type locality for species
- †Coosella vulgaris – type locality for species
- †Coosia
- †Coosia pustulata – type locality for species
- †Corbulispora
- †Corbulispora cancellata
- †Cordaites
- †Cornellites
- †Cornellites flabella
- †Cornulites
- †Cornulites flexuosus
- †Cornulites progressus – or unidentified comparable form
- †Corticospongia – type locality for genus
- †Corticospongia bradfordensis – type locality for species
- †Cranaena
- †Craniops
- †Craniops hamiltoniae
- †Craniops subtruncata
- †Crenistriella
- †Crenistriella crenistria
- †Crepicephalus
- †Crurithyris
- †Crurithyris planoconvexa
- †Cryptolithus
- †Cryptolithus bellulus
- †Cryptolithus recurvus
- †Cryptozoon
- †Cryptozoon undulatum
- †Ctenerpeton – type locality for genus
- †Ctenerpeton remex – type locality for species
- †Ctenoloculina
- †Ctenoloculina cicatricosa
- †Ctenopterus
- †Ctenopterus cestrotus
- †Cuneamya
- †Cupularostrum
- †Cupularostrum congregata
- †Cupularostrum contracta
- †Cupularostrum exima
- †Cupularostrum orbicularis
- †Cyclonema
- †Cyclopteris
- †Cymatospira
- †Cymatospira montfortianus
- †Cypricardella
- †Cypricardella bellastriata
- †Cypricardella bellistriata
- †Cypricardella tenuistriata
- †Cypricardina
- †Cypricardina indenta
- †Cypricardinia
- †Cyrtina
- †Cyrtina hamiltonensis
- †Cyrtospirifer
- †Cyrtospirifer disjunctus
- †Cyrtospora
- †Cyrtospora cristifera – or unidentified comparable form
- †Cystihalysites
D
- †Dawsonia
- †Dawsonia parkeri
- †Deadwoodia
- †Deadwoodia duris
- †Dechenella
- †Deckera
- †Deckera completa
- †Dekayella
- †Dellea
- †Dellea glabellamersa
- †Dellea rogersi – type locality for species
- †Dellea saratogensis
- †Delthyris
- †Deltodus
- †Deltodus angularis
- †Densignathus – type locality for genus
- †Densignathus rowei – type locality for species
- †Derbyia
- †Derbyia crassa
- †Derbyia robusta
- †Devonochonetes
- †Devonochonetes coronatus
- †Devonochonetes scitulus
- †Devonochonetes syrtalis
- †Diacanthaspis
- †Diaphanospora
- †Diaphragmus
- †Dictyomylacris
- †Dictyotomaria
- †Dictyotomaria capillaria
- †Dictyotriletes
- †Dictyotriletes nefandus
- †Dieconeurites – type locality for genus
- †Dieconeurites rigidus – type locality for species
- †Diplocaulus – or unidentified comparable form
- †Diploceraspis
- †Diplograptus
- †Diplograptus nexus
- †Ditomopyge
- †Ditomopyge scitulus
- †Dizygopleura
- †Dodecaactinella
- †Dodecaactinella spicules
- †Dokimocephalus – tentative report
- †Dokimocephalus intermedius
- †Douvillina
- †Douvillina cayuta
- †Douvillina inaequistriata
- †Drabia
- †Drabia acroccipita
- †Drabia acrocclpita
- †Drabia acrocclptia
- †Drabia menusa
- †Drabia typica
- †Dunbarella
- †Dunbarella striata
E
- †Echinoconchus
- †Echinoconchus punctatus
- †Ectenocrinus
- †Ectenocrinus simplex
- †Edaphosaurus
- †Edaphosaurus raymondi – type locality for species
- †Edmondia
- †Eldredgeops
- †Elita
- †Elita fimbriata
- †Elrathia
- †Elrathia grazierensis – type locality for species
- †Elrathina
- †Elvinia
- †Elvinia roemeri
- †Embolophyllum
- †Embolophyllum clarki
- †Embolophyllum coralliferum
- †Embolophyllum schucherti
- †Emmanuella
- †Emmanuella subumbona
- †Emphanisporites
- †Emphanisporites annulatus – or unidentified comparable form
- †Emphanisporites pantagiatus – or unidentified comparable form
- †Emphanisporites rotatus
- †Endolobus
- †Endothyra
- †Endothyranella
- †Endothyranella nitida – or unidentified comparable form
- †Endothyranella stormi – or unidentified comparable form
- †Entellophylloides
- †Entellophylloides inequalils
- †Eoagnostus
- †Eoagnostus roddyi
- †Eoobolus
- †Eoobolus priscus
- †Eoorthis
- †Eoorthis indianola
- †Eoserpeton
- †Eoserpeton tenuicorne – type locality for species
- †Eothele
- †Eothele tubulus
- †Erettopterus
- †Erettopterus globiceps
- †Eryops
- †Eryops avinoffi
- †Eshelmania
- †Esmeraldina
- †Esmeraldina macer
- †Euglyphella
- †Euglyphella numismoides
- †Eukloedenella
- †Eumetria
- †Euomphalus
- †Eupachycrinus
- †Euphemites
- †Euphemites carbonarius
F
- †Fabreciella – type locality for genus
- †Fabreciella pennsylvanica – type locality for species
- †Favosites
- †Fedexia
- †Fenestella
- †Fenestella emaciata
- †Fenestella sinuosa
- †Fimbrispirifer
- †Finkelnburgia
- †Finkelnburgia bridgei – or unidentified comparable form
- †Fistuliporella
- †Fistuliporella minima
- †Fletcherina
- †Fletcherina incognita – or unidentified comparable form
- †Floweria
- †Floweria chemungensis
G
- †Ganorhynchus
- †Ganorhynchus oblongus – type locality for species
- †Geminospora
- †Genevievella
- †Genevievella campbellina – type locality for species
- †Genevievella pennstatensis – type locality for species
- †Genevievella plesiochielus – type locality for species
- †Gigantocharinus – type locality for genus
- †Gigantocharinus szatmaryi – type locality for species
- †Girtya
- †Girtya pennslvanica
- †Girtya pennsylvanica – type locality for species
- †Glabrocingulum
- †Glabrocingulum grayvillense
- †Glaphyraspis
- †Glaphyraspis ovata
- †Glaukerpeton – type locality for genus
- †Glaukerpeton avinoffi – type locality for species
- †Glyptocrinus
- †Glyptodesma
- †Glyptodesma erectum – tentative report
- †Gnathodus
- †Goniomylacris – type locality for genus
- †Goniomylacris pauper – type locality for species
- †Goniophora
- †Goniophora hamiltonensis
- †Grandispora
- †Grandispora cornuta
- †Grandispora upensis
- †Gravicalymene
- †Greenops
- †Greenops boothi
H
- †Hadrotreta
- †Hallipterus
- †Hallipterus lacoanus
- †Hapaloptera – type locality for genus
- †Hapaloptera gracilis – type locality for species
- †Hardieopterus
- †Hardieopterus myops
- †Hazelia
- †Hazelia walcotti
- †Healdia
- †Helcionella
- †Hemimylacrella
- †Hemimylacrella mammothi – type locality for species
- †Hemimylacris
- †Hemimylacris ramificata – type locality for species
- †Herrmannina
- †Heslerodus
- †Heslerodus divergens
- †Hexactinellid
- †Hexactinellid spicules
- †Hibbardella
- †Hibbardia
- †Hibbardia lacrimosa
- †Hindeodus
- †Holcacephalus
- †Holcacephalus tunda
- †Hollinella
- †Hollinella sella – or unidentified comparable form
- †Hollinella tricollina
- †Holonema
- †Holonema horrida – type locality for species
- †Holonema rugosa
- †Holopea
- †Holoptychius
- †Holoptychius americanus
- †Holoptychius filosus – type locality for species
- †Holoptychius giganteus
- †Holoptychus
- †Holoptychus flabellatus – type locality for species
- †Holoptychus latus – type locality for species
- †Holoptychus serrulatus – type locality for species
- †Homacanthus
- †Homacanthus acinaciformis – type locality for species
- †Homilodonta
- †Homilodonta filistriata
- †Hostimella
- †Hostimella crispa
- †Housia
- †Housia vacuna
- †Hudsonaster
- †Hudsonaster lancolatus – or unidentified comparable form
- †Hughmilleria
- †Hymenocaris
- †Hymenozonotriletes
- †Hymenozonotriletes explanatus
- †Hymenozonotriletes granulatus
- †Hynerpeton – type locality for genus
- †Hynerpeton bassetti – type locality for species
- †Hyolithellus
- †Hyolithellus micans
- †Hyolithes
- †Hyolithes wanneri
- †Hyolithid
- †Hypselentoma
- †Hypselentoma perhumerosa
- †Hystricosporites
- †Hystricosporites multifurcatus
- †Hystricosporites porcatus
- †Hystriculina
- †Hystriculina wabashensis
I
- †Ianthinopsis
- †Iddingsia
- †Iddingsia anatina
- †Idiomylacris – type locality for genus
- †Idiomylacris gracilis – type locality for species
- †Imlerella
- †Imlerella praecipita – type locality for species
- †Indiana – tentative report
- †Inflatia
- †Inocaulis
- †Iocrinus
- †Iocrinus subcrassus
- †Irvingella
- †Irvingella major
- †Isodectes
- †Isodectes obtusus – type locality for species
- †Isotelus
- †Ithycephalus
K
- †Katabuporhynchus
- †Katabuporhynchus mesacostalis
- †Kiaeropterus
- †Kiaeropterus otisius
- †Kindbladia
- †Kindbladia wichitaensis
- †Kingstonia
- †Kingstonia apion
- †Kingstonia ara
- †Kingstonia cheilusis – type locality for species
- †Kingstonia trapezoidia – type locality for species
- †Kingstonia ulrichi – type locality for species
- †Kingstonia walcotti
- †Kinklidoblatta
- †Kinklidoblatta lesquereuxi – type locality for species
- †Kinocera – tentative report
- †Kinzercystis
- †Kinzercystis durhami
- †Kinzeria – type locality for genus
- †Kinzeria crinita – type locality for species
- †Kladognathus
- †Kloedinia
- †Knoxisporites
- †Knoxisporites dedaleus
- †Kochiella
- †Kootenia
- †Kootenia marcoui
- †Kraeuselisporites
- †Kutorgina
- †Kutorgina cingulata
- †Kutorgina edsoni
- †Kyphocephalus
L
- †Lacoea
- †Lacoea seriata – type locality for species
- †Lagenospermum
- †Lagenospermum imparirameum
- †Lambdagnathus
- †Lancastria
- †Lecanospira
- †Lecanospira compacta
- †Lecanospira salteri – or unidentified comparable form
- †Leiorhynchus
- †Leiozonotriletes
- †Lepdidodendropsis
- †Leperditia
- †Lepidocystis
- †Lepidocystis wanneri
- †Lepidodendropsis
- †Lepidodendropsis scobiniformis
- †Lepidodendropsis stigillariodes
- †Lepidodendropsis stigillaroides
- †Lepidodendropsis vandergrachti
- †Lepidostrobus
- †Lepidostrobus gallowayi
- †Leptaena
- †Leptaena rhomboidalis
- †Leptaena richmondensis – or unidentified comparable form
- †Leptodesma
- †Leptodesma cadmus
- †Leptodesma extenuatum
- †Leptodesma hector
- †Leptodesma laevis
- †Leptodesma lichas
- †Leptodesma maclurii
- †Leptodesma mortoni
- †Leptodesma naviforme
- †Leptodesma nereus
- †Leptodesma nitida
- †Leptodesma orus
- †Leptodesma patulum
- †Leptodesma pelops
- †Leptodesma phaon
- †Leptodesma sayi
- †Leptodesma sociale
- †Leptodesma spinerigum
- †Leptomitus
- †Lichenocrinus
- Lingula
- †Lingula carbonaria
- †Lingula delia
- †Lingula ligea
- †Lingulella
- †Lingulella marcia – or unidentified comparable form
- †Lingulepis
- †Lingulepis acuminata
- †Linoproductus
- †Linoproductus cora
- †Liospira
- †Liospira americana
- †Llanoaspidella – type locality for genus
- †Llanoaspidella bigenusia – type locality for species
- †Llanoaspidella warriorsmarkensis – type locality for species
- †Llanoaspis – tentative report
- †Lonchocephalus
- †Lonchocephalus planus – type locality for species
- †Lonchocephalus swartzi – type locality for species
- †Lonchocephalus waddlei – type locality for species
- †Longispina
- †Longispina mucronatus
- †Lophophyllidium
- †Lophophyllidium profundum
- †Lophospira
- †Lophozonotriletes
- †Lophozonotriletes excisus
- †Lophozonotriletes tuberosus
- †Loxonema
- †Lysorophus
- †Lysorophus dunkardensis
M
- †Macluritella – tentative report
- †Macluritella multiseptarius
- †Maeneceras
- †Maeneceras milleri
- †Margaretia
- †Mariopteris
- †Martinia
- †Mediospirifer
- †Mediospirifer audaculus
- †Mediospirifer belliplicata
- †Mediospirifer bellitropis
- †Mediospirifer dromgoldi
- †Megakozlowskiella
- †Megakozlowskiella sculptilis
- †Megalograptus – tentative report
- †Megamolgophis
- †Megamolgophis agostinii
- †Megastrophia
- †Menomonia
- †Menomonia calymenoides
- †Mesitoblatta
- †Mesitoblatta emersoni – type locality for species
- †Mesotaphraspis
- †Metacoceras
- †Metacoceras cornutum
- †Metaxyblatta – type locality for genus
- †Metaxyblatta hadroptera – type locality for species
- †Metropator – type locality for genus
- †Metropator pusillus – type locality for species
- †Michelinoceras
- †Micromitra
- †Micromitra alabamensis
- †Mimagoniatites – tentative report
- †Modiella
- †Modiella pygmaea
- †Modiolopsis
- †Modiomorpha
- †Modiomorpha concentrica
- †Modocia
- †Modocia benorensis – type locality for species
- †Monotrypa
- †Monotrypa benjamini
- †Mucrospirifer
- †Mylacridae
- †Mylacridae carbonina
- †Mylacris
- †Mylacris angusta – type locality for species
- †Mylacris anthracophila – type locality for species
- †Mylacris dubia – type locality for species
- †Mylacris lucifuga – type locality for species
- †Mylacris ovalis – type locality for species
- †Mylacris pennsylvanica – type locality for species
- †Mylacris truncatula – type locality for species
N
- †Nalivkinella
- †Nalivkinella echoense
- †Nanahughmilleria
- †Nanahughmilleria clarkei
- †Naticonema
- †Naticopsis
- †Necymylacris
- †Necymylacris heros – type locality for species
- †Necymylacris lacoana – type locality for species
- †Neoblairella – type locality for genus
- †Neoblairella crassimarginata – type locality for species
- †Neochonetes
- †Neochonetes granulifer
- †Neomylacris
- †Neomylacris major – type locality for species
- †Neomylacris pulla – type locality for species
- †Neoprionodus
- †Neoraistrickia
- †Neosimplicius – type locality for genus
- †Neosimplicius medialis – type locality for species
- †Neospirifer
- †Neriopteris
- †Neriopteris lanceolata
- †Nervostrophia
- †Nervostrophia nervosa
- †Neuropteris
- †Nisusia
- †Nisusia festinata
- Nucula
- †Nucula bellistriata
- †Nucula lirata
- Nuculana
- †Nuculites
- †Nuculites oblongatus
- †Nuculites planulatus
- †Nuculites triqueter
- †Nuculopsis
- †Nuculopsis girtyi
O
- †Octonaria
- †Octonaria bifurcata
- †Octonaria dicristata
- †Octonaria quadricostata
- †Ogygopsis
- †Ogygopsis klotzi
- †Olenellus
- †Olenellus alius
- †Olenellus similaris
- †Olenellus wanneri
- †Olenoides
- †Olenoides buttsi – type locality for species
- †Olenoides pennsylvanicus – type locality for species
- †Olenoides serratus
- †Olethroblatta
- †Olethroblatta americana – type locality for species
- †Orbiculoidea
- †Orbiculoidea tullia
- †Orsadesmus – type locality for genus
- †Orsadesmus rubecollus – type locality for species
- †Orthacanthus
- †Orthacanthus compressus
- †Orthacanthus platypternus
- †Orthacanthus texensis
- †Orthoceras
- †Orthograptus
- †Orthograptus quadrimucronatus
- †Orthomylacris
- †Orthomylacris alutacea – type locality for species
- †Orthomylacris analis – type locality for species
- †Orthomylacris cordiformis – type locality for species
- †Orthomylacris mansfieldi – type locality for species
- †Orthomylacris pauperata – type locality for species
- †Orthomylacris pennsylvaniae – type locality for species
- †Orthomylacris pittstoniana – type locality for species
- †Orthomylacris pluteus – type locality for species
- †Orthonota
- †Orthonota parvula – tentative report
- †Orthonota undulata
- †Orthonychia
- †Orthonychia parva
- †Orthotetes
- †Orthotheca
- †Orthotheca shriveri – type locality for species
- †Oryctocephalus
- †Osteolepis
- †Oulodus
- †Ovatia
- †Oxynoblatta
- †Oxynoblatta vicina – type locality for species
- †Ozarkodina
P
- †Paedeumias
- †Paedeumias eboracense
- †Paedeumias glabrum
- †Paedeumias yorkense
- †Pagetia
- †Paladin
- †Palaeoneilo
- †Palaeoneilo constricta
- †Palaeoneilo fecunda
- †Palaeoneilo muta
- †Palaeoneilo oweni
- †Palaeoneilo plana
- †Palaeoneilo tenuistriata
- †Palaeotherates
- †Palaeotherates pennsylvanicus – type locality for species
- †Palaeozygopleura
- †Palaeozygopleura delphicola
- †Panenka
- †Parabolbina
- †Parabolbina cardocornella
- †Parabolbina obliqua
- †Parabolinella
- †Parabolinella occidentalis
- †Parabolinoides
- †Paracyclas
- †Paracyclas lirata
- †Parahaplophlebium
- †Parahaplophlebium longipenne – type locality for species
- †Parahughmilleria
- †Parahughmilleria maria
- †Parajuresania
- †Parajuresania nebrascensis
- †Parallelodon
- †Parallelodon obsoletus
- †Paranacystites
- †Paraspirifer
- †Paraspirifer acuminatus
- †Parvohallopora
- †Parvohallopora dalei – or unidentified comparable form
- †Paterina
- †Paterina bella
- †Pelagiella
- †Pemphigaspis
- †Pemphigaspis bullata
- †Pemphigaspis intermedia – type locality for species
- †Pemphigaspis matutina
- †Penniretepora
- †Pentremites
- †Periomella
- †Periomella roddyi
- †Periomella yorkensis
- †Peronopsis
- †Petalodus
- †Petalodus ohioensis
- †Petrocrania
- †Phacops
- †Pharkidonotus
- †Pharkidonotus percarinatus
- †Phestia
- †Philhedra
- †Philhedra laelia – or unidentified comparable form
- †Phoberoblatta – type locality for genus
- †Phoberoblatta grandis – type locality for species
- †Phoberoblatta reticulata – type locality for species
- †Pholidops
- †Pholidostrophia
- †Pholidostrophia pennsylvanica
- †Phragmactis
- †Phricodothyris
- †Phthinomylacris
- †Phthinomylacris medialis – type locality for species
- †Phthinomylacris pauper – type locality for species
- †Phthonia
- †Phthonia sectifrons
- †Phyloblatta
- †Phyloblatta indecisa – type locality for species
- †Phyloblatta prior – type locality for species
- †Pinctus
- †Pinctus latus
- Pinna
- †Pionoceras
- †Pionoceras swartzi
- †Plagioblatta
- †Plagioblatta campbelli – type locality for species
- †Plagioblatta cockerelli – type locality for species
- †Plagioglypta
- †Plagioglypta meekiana
- †Planoendothyra – tentative report
- †Planoendothyra associata
- †Planutenia
- †Planutenia flectata
- †Plasiochiton – type locality for genus
- †Plasiochiton curiosus – type locality for species
- †Platyceras
- †Platyceras euomphaloides
- †Platyceras lineatum
- †Platylichas
- †Plectorthis
- †Plectorthis plicatella
- †Pleurodictyum
- †Pleurodictyum styloporum
- †Polidevcia
- †Polidevcia bellistriata
- †Poliella
- †Poliella bala
- †Polypora
- †Ponderodictya
- †Ponderodictya favulosa
- †Ponderodictya punctulifera
- †Poroblattina
- †Poroblattina parvula – type locality for species
- †Praewaagenoconcha
- †Praewaagenoconcha speciosa
- †Primitiella
- †Primitiella unicornis
- †Prismopora
- †Productella
- †Productella rectispina
- †Productus
- †Proetus
- †Proetus haldemani – tentative report
- †Proetus parviusculus
- †Prolepidodendron
- †Prolepidodendron breviinternodium
- †Promopalaeaster
- †Promopalaeaster bellulus
- †Promopalaeaster pricei
- †Promytilus
- †Protobarinophyton
- †Protobarinophyton pennsylvanicum
- †Protocaris
- †Protocycloceras
- †Protocycloceras rushense
- †Protoleptostrophia
- †Protoleptostrophia perplana
- †Protomya – or unidentified comparable form
- †Protospongia – tentative report
- †Prozacanthoides
- †Pseudoatrypa
- †Pseudoatrypa devoniana
- †Pseudolingula
- †Pseudolingula rectilateralis
- †Pseudopaolia
- †Pseudopaolia lacoana – type locality for species
- †Pseudopolyernus
- †Pseudopolyernus laminarum – type locality for species
- †Pseudosaratogia
- †Pseudosaratogia bulbosa
- †Pseudosaratogia lata – tentative report
- †Pseudosaratogia magna
- †Pseudotealliocaris
- †Pseudotealliocaris palincsari
- †Pteridomylacris – type locality for genus
- †Pteridomylacris paradoxa – type locality for species
- †Pterinea
- †Pterinopecten
- †Pterinopecten hermes
- †Pterinopecten princeps
- †Pterochaenia
- †Pterygometopus
- †Pterygometopus achates
- †Ptilograptus
- †Ptilomylacris – type locality for genus
- †Ptilomylacris medialis – type locality for species
- †Ptilopora
- †Ptomatis
- †Ptychoglyptus
- †Ptychoglyptus virginensis – or unidentified comparable form
- †Ptychoparella
- †Ptychoparella lancastra
- †Ptychopteria
- †Ptychopteria chemungensis
- †Ptychopteria flabella
- †Ptychopteria salamanca
- †Ptylopora
- †Pugnax
- †Pugnax pugnus
- †Pustula
- †Pustula pertenuis
- †Pustulatia
- †Pustulatia pustulosa
Q
R
- †Rafinesquina
- †Rafinesquina alternata
- †Retichonetes
- †Retichonetes marylandicus
- †Retichonetes vicinus
- †Retispira
- †Retispira marcouianus
- †Retusotriletes
- †Retusotriletes phillipsii
- †Rhacophyton
- †Rhacopteris
- †Rhinidictya
- †Rhinocarcinosoma
- †Rhinocarcinosoma cicerops
- †Rhipidomella
- †Rhipidomella leucosia
- †Rhipidomella penelope
- †Rhipidomella vanuxemi
- †Rhodea
- †Rhodea alleghanensis – type locality for species
- †Rhodea tionestana – type locality for species
- †Rhodea vespertina – type locality for species
- †Rhombopora
- †Rhytimya
- †Rhytimya radiata
- †Ribeiria
- †Ribeiria parva – or unidentified comparable form
- †Roddyia
- †Rodea (genus)
- †Rodea vespertina – type locality for species
- †Ruedemannipterus
- †Ruedemannipterus stylonuroides
- †Rugospora
- †Rugospora flexuosa
S
- †Salterella
- †Salterella acervulosa
- †Salterella conulata
- †Salterella mccullochi
- †Salterella pulchella
- †Sanguinolites
- †Sapphicorhynchus
- †Sapphicorhynchus sappho
- †Saratogia
- †Saratogia type locality for species – informal
- †Sauripterus
- †Schaefferia (Paleozoic plant) – or unidentified comparable form
- †Schizoblatta
- †Schizoblatta pennsylvanica – type locality for species
- †Schizodiscus
- †Schizodiscus capsa
- †Schizodus
- †Schizodus cuneatus
- †Schizophoria
- †Schizophoria amanaensis
- †Schizophoria impressa
- †Schizophoria striatula
- †Schuchertella
- †Schuchertella parva
- †Schuchertella variabilis
- †Schuchertia
- †Schuchertia laxata
- †Sciadophyton
- †Secarisporites
- †Selkirkia
- †Septopora
- †Serracaris
- †Shansiella
- †Shansiella carbonaria
- †Sidneyia
- †Sigillaria
- †Sinochonetes
- †Sinochonetes lepidus
- †Sinuites
- †Sinuites cancellatus
- †Soleniscus
- †Soleniscus primogenia
- †Soleniscus typicus
- †Solenochilus
- †Solenochilus collectum
- †Solenopleurella
- †Solenopleurella elatifrons – type locality for species
- †Solenopleurella transversa – type locality for species
- †Solutotherates
- †Solutotherates analis – type locality for species
- †Sowerbyella
- †Sowerbyella plicatellus
- †Sowerbyella rugosa
- †Spathognathodus
- †Spelaeotriletes
- †Spelaeotriletes crustalus
- †Spelaeotriletes resolutus
- †Sphenomylacris
- †Sphenomylacris singularis – type locality for species
- †Spinatrypa
- †Spinatrypa hystrix
- †Spinatrypa spinosa
- †Spinocyrtia
- †Spinocyrtia girtyi
- †Spinocyrtia granulosa
- †Spinocyrtia macbridei
- †Spinulicosta
- †Spinulicosta spinulicosta
- †Spirifer
- †Spirifer disjunctus
- †Spirifer varicosa
- †Spongophylloides
- †Spyroceras
- †Spyroceras nuntium
- †Stauromatidium
- †Stauromatidium marylandicum
- †Stemtonoceras
- †Stemtonoceras elongatum
- †Stenomylacris – type locality for genus
- †Stenomylacris elegans – type locality for species
- †Stereolasma
- †Stittaspis
- †Stittaspis loria – type locality for species
- †Straparollus
- †Striacoceras
- †Striacoceras typum – tentative report
- †Strobeus
- †Strobeus paludinaeformis
- †Strophalosia
- †Strophalosia truncata
- †Stropheodonta
- †Stropheodonta demissa
- †Strophomena
- †Styliolina
- †Styliolina bellistriata
- †Styliolina fissurella
- †Subrensselandia
- †Subrensselandia claypolii
- †Sulcocephalus
- †Sulcocephalus candidus
- †Sulcocephalus granulosus
- †Sulcoretepora
- †Sulcoretepora incisurata
- †Sulcoretepora sinuosa – or unidentified comparable form
- †Swataria – type locality for genus
- †Swataria derstleri – type locality for species
- †Syntrophina
- †Syscioblatta
- †Syscioblatta allegheniensis – type locality for species
- †Syscioblatta pennsylvanica – type locality for species
T
- †Tabulipora
- †Taeniaster
- †Taeniaster maximus
- †Taenicephalus
- †Taenicephalus shumardi
- †Taeniocrada
- †Taeniopora
- †Taeniopora exigua
- †Taonurus
- †Tellinopsis
- †Temnocheilus
- †Temnocheilus crassus
- †Tentaculites
- †Tentaculites attenuatus
- †Tetradella
- †Tetradella multipustulosa
- †Tetraxylopteris
- †Thlipsura
- †Thlipsura ultimata
- †Thlipsurella
- †Thlipsurella semipunctata
- †Titanodictya
- †Titanodictya jucunda – type locality for species
- †Titusvillia – type locality for genus
- †Titusvillia drakei – type locality for species
- †Trepospira
- †Trepospira illinoisensis
- †Triarthrus
- †Triarthrus becki
- †Tricrepicephalus
- †Tricrepicephalus arcuatus – type locality for species
- †Trimerus
- †Trimerus dekayi
- †Triphyllopteris
- †Triphyllopteris biloba – type locality for species
- †Triphyllopteris latilobata – type locality for species
- †Triphyllopteris latilobatus
- †Triphyllopteris lescuriana
- †Trocophyllum
- †Trocophyllum breviinternodium
- †Tropidoleptus
- †Tropidoleptus carinatus
- †Truncalosia
- †Truncalosia truncata
- †Truncatiramus – now regarded as a jr. synonym of Erettopterus[1][2]
- †Tryplasma
- †Tubulella
- †Tuzoia
- †Tylothyris
- †Tylothyris mesacostalis
- †Tylothyris pauliformis
U
- †Ulrichia
- †Ulrichia elongata
- †Ulrichia spinifera
- †Urasterella
- †Urasterella pulchella
V
- †Vallatisporites
- †Vallatisporites pusilites
- †Vernonaspis
- †Verrucosisporites
- †Verrucosisporites nitidus
- †Verrucosisporites scurrus
- †Vinella
W
X
- †Xenoblatta
- †Xenoblatta pennsylvanica – type locality for species
- †Xenocheilos
- †Xenocheilos spineum
Y
- †Yochelcionella
- †Yochelcionella americana – type locality for species
- †Yochelcionella chinensis
- †Yochelcionella greenlandica
- †Yorkia
- †Yorkia wanneri
Z
- †Zaphrenthis
- †Zelophyllia
- †Zelophyllum
- †Zygospira
References
- ↑ Ciurca, Samuel J.; Tetlie, O. Erik (2007). "Pterygotids (Chelicerata; Eurypterida) from the Silurian Vernon Formation of New York". Journal of Paleontology. 81 (4): 725–736. doi:10.1666/pleo0022-3360(2007)081[0725:PEFTSV]2.0.CO;2. ISSN 0022-3360. S2CID 140668235.
- ↑ Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch , version 18.5 http://www.wsc.nmbe.ch/resources/fossils/Fossils18.5.pdf (PDF).
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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