This list of the Paleozoic life of Indiana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Indiana and are between 538.8 and 252.17 million years of age.
A
- † Abatocrinus
Fossilized calyx of the Carboniferous crinoid ("sea lily") Abrotocrinus - † Acacocrinus
- † Acanthopecten
- †
Achistrum
- † Achistrum brevis – type locality for species
- † Achistrum ludwigi
- † Achistrum nicholsoni
- † Achistrum triassicum
- † Achradocrinus
- † Acidaspis
- †
Acinophyllum
- † Acinophyllum davisi – type locality for species
- † Acratia
- † Acrocrinus
- † Acrophyllum
Fossilized calyx and partial stem of the Devonian-Permian crinoid ("sea lily") Actinocrinites - † Actinocrinites gibsoni
- † Actinocrinites grandissimus
- † Actinocrinites lobatus – tentative report
- † Actinocrinites lowei
- † Actinopteria
- † Actinostroma
- † Adinocrinus
- † Aemuliophyllum
- † Aganaster
- † Agaricocrinites
- †
Agaricocrinus
Fossilized calyx of the Carboniferous crinoid ("sea lily") Agaricocrinus americanus, or the mushroom crinoid
- †
Agassizocrinus
- † Agassizocrinus gibbosus – or unidentified comparable form
- † Agassizocrinus laevis – or unidentified comparable form
- † Ageneracrinus
- † Ahrensisporites
- † Aipoceras – tentative report
- † Alaskadiscus
- † Alatisporites
Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris - † Alisocrinus
- † Allocrinus
- † Allocystites
- † Alloprosallocrinus
- † Allorhynchus
- † Alveolites
- †
Amaurotoma
- † Amaurotoma leavenworthana – type locality for species
- † Amaurotoma subangulatum – type locality for species
- † Ambocoelia
- † Ambonychia
- Ammobaculites
- Ammodiscus
- † Ammonellipsites
- † Ammovertella
- † Ampheristocystis
- † Amphipora
- †
Amphipsalidocrinus – type locality for genus
- † Amphipsalidocrinus inconsuetus
- † Amphipsalidocrinus scissurus – type locality for species
- † Amphissites
- † Amphistrophia
- † Amphoracrinus
- †
Amplexiphyllum
- † Amplexiphyllum cruciforme
- † Amplexiphyllum simplex – tentative report
- † Amplexiphyllum tenue
- † Amplexizaphrentis
Ordovician-Permian bryozoan Amplexopora - † Amplexopora discoidea – or unidentified comparable form
- † Amplexus
- † Anachoropteris
- † Anapiculatisporites
- † Anartiocystis
- † Anastrophia
- † Anchiopsis
- † Ancyrocrinus
- †
Anematina
- † Anematina proutana – type locality for species
- † Angustidontus
- †
Angyomphalus
- † Angyomphalus northviewensis – or unidentified related form
- † Anisocrinus
- † Anisotrypa
- † Ankyropteris
Fossil of the Carboniferous horsetail relative Annularia - † Anomalodonta
- † Anopliopsis
- † Anthracospirifer
- † Antirhynchonella
- † Aphelakardia
- † Aphelecrinus
- † Aphelotoxon
- † Aphlebia
- † Apiculatasporites
- † Apiculatisporites
- †
Arabellites
- † Arabellites comis
- † Arabellites conspicuous – or unidentified comparable form
- † Arabellites cultriformis – or unidentified comparable form
- † Arabellites hamiltonesis
- †
Arachnophyllum
- † Arachnophyllum striatum – or unidentified comparable form
- † Archaeopitys
Fossils of the Carboniferous-Permian bryozoan Archimedes - † Archimedes communis
- † Archimedes compactus
- † Archimedes distans
- † Archimedes intermedius
- † Archimedes invaginatus
- † Archimedes lativolvis
- † Archimedes macfarlani
- † Archimedes meekanoides
- † Archimedes meekanus
- † Archimedes negligens – or unidentified comparable form
- † Archimedes proutanus
- † Archimedes swallovanus
- † Archimedes swallowvanus
- † Archimedes symmetricus
- † Archimedes terebriformis
- †
Archinacella
- † Archinacella indianensis – type locality for species
Fossil of the Silurian trilobite Arctinurus - † Arjamannia
- † Armenoceras
- † Arnoldella
- † Arthroacantha
- † Arthropitys
- † Artisia
- † Asaphocrinus
- † Ascoceras
- † Ascodictyon
- † Ascopora
- † Aspidiaria
- † Asterophyllites
- † Asterotheca
Life restoration of the Early Devonian club moss relative Asteroxylon - † Astraeospongium
- † Astylospongia
- † Atactoporella
- † Atelodictyon
- † Athyris
- †
Atrypa
- † Atrypa newsomensis
- † Atrypa parva – or unidentified comparable form
- † Atrypa reticularis
- † Atrypa reticularus
- † Atrypina
- † Aulacophyllum
- † Aulacotheca
- †
Aulocystis
- † Aulocystis auloporidea
- † Aulocystis incrustans – tentative report
- † Aulocystis jacksoni
- † Aulocystis lucasensis
- † Aulocystis nobilis
- † Aulocystis procumbens – tentative report
- † Aulocystis transitorius – type locality for species
Fossil of the Late Ordovician-Permian tabulate coral Aulopora - † Auloporella
- † Aviculopecten
- † Avonia – tentative report
- † Avonia
B
-
Bairdia
- † Bairdia compacta
- † Bairdia egorovi – or unidentified related form
- † Bairdia kinderhookensis – or unidentified related form
- † Barroisella
- † Barycrinus
- † Baryschyr
- † Batocrinus
- † Batostoma
- † Batostomella
- † Beatricea
- †
Beecheria
- † Beecheria illinoisense
- † Beecheria shumardanum – tentative report
- † Beecheria sinuata
- † Belemnospongia
Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon - † Bellerophon gibsoni – type locality for species
- † Bellerophon jeffersonensis
- † Bellerophon spergensis – type locality for species
- †
Belodella
- † Belodella resima – or unidentified comparable form
- †
Beloitoceras
- † Beloitoceras amoenum – type locality for species
- † Beloitoceras bucheri
- † Beloitoceras chapparsi
- † Beloitoceras cumingsi
- † Beloitoceras ohioense
- † Beloitoceras transiens
- † Bembexia
- Berenicea
- †
Bethacanthus – type locality for genus
- † Bethacanthus insolitus – type locality for species
- † Bethanyphyllum
- † Beyrichoceras
- †
Bigalea
- † Bigalea ohioensis – type locality for species
- † Billingsastrea
- †
Blothrophyllum
- † Blothrophyllum bellicinctum
- † Blothrophyllum corium
- † Blothrophyllum greeni – tentative report
- † Blothrophyllum romingeri – type locality for species
- † Blothrophyllum sinuosum
- † Blothrophyllum tripinnatum
- † Blothrophyllum trisulcatum
- † Blothrophyllum zaphrentiforme
- † Blountia – tentative report
- † Bordonia
- † Bothrodendron
- † Botryocrinus
- †
Brachythyris
- † Brachythyris fernglenensis – or unidentified related form
- † Brachythyris suborbicularis
- † Brahmacrinus
- † Brittsia
- † Brockocystis
- †
Bucania
- † Bucania simulatrix – type locality for species
- † Bucanophyllum
- † Bucanopsis
- †
Bulimorpha
- † Bulimorpha bulimiformis – type locality for species
- † Bulimorpha elongata – type locality for species
- † Bullimorpha
Fossil of the Early Ordovician-Silurian trilobite Bumastus - † Bumastus armatus – or unidentified comparable form
- † Bumastus insignis
- † Bumastus ioxus
- † Bumastus niagarense – or unidentified comparable form
- † Bynumina
- † Byssonychia
- † Bythocyproidea
- † Bythopora
C
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites - † Calamodendron
- † Calamospora
- †
Calamostachys
- † Calamostachys paniculata – tentative report
- † Calamostachys superba
- † Calamostachys tuberculata
- † Calceocrinus
- † Calliocrinus
- † Callipleura
Fossilized fronds of the Carboniferous seed fern Callipteridium - † Callistophyton
- † Callixylon
- † Callocystites
- † Calocephalites
- †
Calostylis
- † Calostylis trigemma – tentative report
- †
Calymene
- † Calymene breviceps
- † Calymene celebra
Fossils in enrolled posture of the Silurian trilobite Calymene niagarensis
- † Calyptactis
- †
Camarotoechia
- † Camarotoechia gregaria – tentative report
- † Camarotoechia horsfordi
- † Camarotoechia mutata
- † Camarotoechia neglecta – or unidentified comparable form
- † Camarotoechia pisa
- † Camarotoechia tethys
- † Camptocrinus
Fossil of the Silurian eurypterid ("sea scorpion") Carcinosoma - †
Cardiocarpon
- † Cardiocarpon annulatum
- † Cardiocarpon dilatatus
- † Cardiocarpon ingens – tentative report
- † Cardiocarpon latealatum
- † Carneyella
- † Carpocrinus
- † Carpomanon
- † Caryocrinites
Life restoration of the Carboniferous Chimaera relative Caseodus - † Caseodus eatoni – type locality for species
- † Catazyga
- † Catillocrinus
- † Cavellina
- † Cayrocrinites
- † Cayugaea
- † Cayugea
- † Centronella
- † Ceramopora
- † Ceramoporella
- † Ceraurinus
- † Ceraurus
- †
Cervifurca – type locality for genus
- † Cervifurca nasuta – type locality for species
- † Chancelloria
- † Charactoceras
- † Cheilocephalus
Fossil of the Cambrian-Middle Devonian trilobite Cheirurus - † Chilotrypa
- † Chomatodus
- † Chondrites
- † Chonetes
- † Chonophyllum
- † Chonostegites
- † Cincinnaticrinus
Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina - † Cingularia
- † Cingulizonates
- † Cirratriradites
- † Cladochonus
- †
Cladopora
- † Cladopora acupicta
- † Cladopora bifurca
- † Cladopora gracilis – tentative report
- † Cladopora gulielmi
- † Cladopora imbricata – tentative report
- † Cladopora robusta – tentative report
- † Cladopora roemeri
- † Cladoxylon
- † Clathrodictyon
- † Clathrospira
- † Cleiodictya
Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina - † Cleodictya
- † Clepsidropsis
- † Clepsydropsis
- † Clinopistha
- † Cliotrypa
- † Clorinda – tentative report
- † Codonotheca
- †
Coelocerododontus
- † Coelocerododontus biconvexus – or unidentified comparable form
- † Coelochilina
- † Coeloclema
- † Coelospira
- †
Coenites
- † Coenites brownsportensis
- † Coenites cryptodens – or unidentified comparable form
- † Coenites laqueata – or unidentified comparable form
- † Coenites rectilineatus
- † Coleophyllum
- † Columnaria
- † Complexisporites
Fossilized shell of the Late Devonian-Permian brachiopod Composita - † Compressiphyllum
- † Concavicaris
- †
Conchidium
- † Conchidium biolularis – or unidentified comparable form
- † Conchidium exporrecta
- † Conchidium laqueatum
- † Conchidium littoni – or unidentified comparable form
- †
Conocardium
- † Conocardium richmondense – type locality for species
Fossil of the Ordovician bryozoan Constellaria - † Conularia
- † Convolutipora
- † Convolutispora
- † Coolinia
- † Cordaianthus
- † Cordaicarpon – tentative report
- † Cordaites
- † Cornulitella
Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites - Cornuspira
- † Coronura
- † Corynotrypa
- † Costalocrinus
- † Costatulites
- † Cranaena
- † Crania
- † Craniops
- † Crassispora
- †
Craterophyllum
- † Craterophyllum latiradium – tentative report
- † Craterophyllum magnificum
- † Cribanocrinus
- † Cribroconcha – tentative report
- † Cristatisporites
- † Crossotheca
Fossilized stem segments of the Silurian crinoid ("sea lily") Crotalocrinites - † Crotalocrinus
- † Crurithyris
- † Cryptonella
- † Crytobairdia
- † Ctenocrinus
- † Ctenodonta
- † Cuffeyella
- † Cunctocrinus
- † Cuneamya
- † Cupularostrum
- † Cupulocorona
- † Cupulocrinus
- † Cyathaxonia
Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites - † Cyathocrinites glenni – or unidentified comparable form
- † Cyathocrinites multibrachiatus
- † Cyathocrinites parvibrachiatus
- † Cyathocrinites pauli
- † Cyathocrinites sanduskyensis
- † Cyathocrinites striatissimus
- † Cyathocrinites wilsoni
- † Cyathophyllum – tentative report
- † Cycloconcha
- † Cyclocyclopa
- † Cyclogranisporites
- † Cycloholcus
- † Cyclonema
- † Cyclopentagonopa
Fossilized foliage from the Carboniferous seed fern Cyclopteris - † Cyclospongia
- † Cyclotrypa
- † Cylicocrinus
- † Cylindrophyllum
- † Cymatonota
Fossil of the Late Ordovician-Late Devonian trilobite Cyphaspis - † Cyphocrinus
- † Cyphotrypa
- † Cypricardinia
- † Cyrtia
- † Cyrtina
- † Cyrtocerina
- † Cyrtodontula
- † Cyrtolites
Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer - † Cystelasma
- † Cystihalysites
- † Cystiphylloides
- † Cystiphyllum
- † Cystodictya
- † Cytocrinus
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D
- † Dalejina
Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites - † Danaea
- † Dawsonoceras
- †
Decadocrinus
- † Decadocrinus depressus
- † Decadocrinus stellatus – type locality for species
- † Decadorinus
- † Decaschisma
- † Decatocrinus
- †
Deceptrix
- † Deceptrix albertina
- † Deceptrix decipiens – tentative report
- † Dechenella
- † Decoroproetus
- † Delicaster
- † Dellea
- † Delthyris
- † Deltoidospora
- † Dendrina – tentative report
- † Dendrocrinus
- † Densosporites
- † Desmacriocrinus
- † Desmidocrinus
- † Devonochonetes
- † Diabolirhynchia
- † Diabolorhynchia
- † Diaphorodendron
- † Diaphragmus
- † Dichocrinus
- †
Dichostreblocrinus – type locality for genus
- † Dichostreblocrinus scrobiculus – type locality for species
- † Dicksonites – tentative report
- † Dicoelosia
- † Diconularia
- † Dictyoclostus
- † Dictyonema
- † Dictyospongia – tentative report
- † Diedrorynchus
- † Dielasma
- † Dielasmella
- †
Diestoceras
- † Diestoceras cyrtocerinoides
- † Diestoceras eos
- † Diestoceras indianense
- † Diestoceras pupa
- † Diestoceras reversum – tentative report
- † Diestoceras shideleri
- † Diestoceras shiderleri
- † Diestoceras vasiforme
- † Diestoceras waynesvillense – type locality for species
- † Dimegelasma
- † Dimerocrinites
Mounted skull of the Late Devonian placoderm fish Dunkleosteus - †
Dinobolus
- † Dinobolus conradi – or unidentified comparable form
- † Diplochone
- † Diplothmema
- † Diplotrypa
- †
Disphyllum
- † Disphyllum cohaerens
- † Disphyllum synaptophylloides – type locality for species
- † Ditoecholasma
Fossils of the Carboniferous crinoid ("sea lily") Dizygocrinus - † Dizygocrinus indianaensis
- † Dizygocrinus indianensis
- † Dizygocrinus venustus – or unidentified comparable form
- † Dizygocrinus whitei – or unidentified comparable form
- † Dolatocrinus
- † Dolerorthis
- † Dorycrinus
- † Douvillina
- † Drabia – tentative report
Fossil of the Silurian-Late Devonian eurypterid ("sea scorpion") Drepanopterus - † Drymopora
- † Duncanella
- † Dyscritella
- † Dystactospongia
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E
- †
Ecclimadictyon
- † Ecclimadictyon fastigiatum – or unidentified comparable form
- † Echinoconchus
- † Edaphophyllum
Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus - † Edmondia
- † Elasmonema
- † Elaterites
- † Eldredgeops
- † Elita
- † Elvinia
- † Elytron
- † Emmonsia
- † Emperocrinus
Fossil of the Middle Ordovician-Early Devonian trilobite Encrinurus - † Endosporites
- † Enterolasma
- † Eocaudia
- Eocaudina
- † Eochonetes
- †
Eodictyonella (formerly Dictyonella)
- † Eodictyonella coralifera – or unidentified comparable form
- † Eodictyonella reticulata
- † Eohalysiocrinus
- † Eoparisocrinus
- † Eoplectodonta
- † Eoplicanoplia
- † Eospinatrypa
- † Eospirifer
- †
Eotomaria
- † Eotomaria laphami
- † Eotomaria trochoides – type locality for species
- †
Eotrochus
- † Eotrochus tenuimarginatus – type locality for species
- † Eratocrinus
Fossilized calyx and partial stem of the Carboniferous crinoid ("sea lily") Eretmocrinus - † Eretmocrinus cassedayanus – tentative report
- † Eretmocrinus magnificus
- † Eridophyllum
- † Eridopora
- † Eridorthis
Fossils (figures 2-10) of the Silurian-Devonian eurypterid ("sea scorpion") Erieopterus - † Eucalyptocrinites
- † Eucheirocrinus
- †
Euchondria
- † Euchondria grandis – tentative report
- †
Euconospira
- † Euconospira conula – type locality for species
- † Euconospira elegantula – type locality for species
- †
Eugeneodus – type locality for genus
- † Eugeneodus richardsoni – type locality for species
- † Eumetria
- † Eunella
- † Eunema
- † Eunicites
- † Euomphalopterus
- † Eupachycrinus
- † Eurychilina
- † Eusphenopteris
- † Euthyrhachis
- † Eutrophoceras
F
- † Fabalicypris
- † Fardenia
Fossil of the Late Ordovician-Permian tabulate coral Favosites - † Favosites arbor
- † Favosites baculus
- † Favosites biloculi
- † Favosites clelandi
- † Favosites cristatus
- † Favosites discoideus
- † Favosites favosus
- † Favosites forbesi
- † Favosites forbsei
- † Favosites goodwini
- † Favosites hisingeri
- † Favosites hispidus – or unidentified comparable form
- † Favosites impeditus
- † Favosites mundus
- † Favosites niagarensis
- † Favosites occidentalis
- † Favosites patellatus – type locality for species
- † Favosites pirum
- † Favosites placentus
- † Favosites proximatus
- † Favosites quercus
- † Favosites ramulosus
- † Favosites rotundituba
- † Favosites spinigerus
- † Favosites turbinatus
- † Fayettoceras
Fossil of the Middle Ordovician-Late Triassic bryozoan ("moss animal") Fenestella - † Fenestralia
- † Ferganella
- † Fimbrispirifer
- † Finitiporus
- † Fistulipora
- † Fletcheria
- †
Flexaria
- † Flexaria annosa – or unidentified related form
- † Flexaria floydensis
Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene - † Florinites
- † Floweria
G
- †
Gattendorfia
- † Gattendorfia alteri – type locality for species
- † Gazacrinus
- † Gennaeocrinus
- † Gigantopteris
Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus - †
Gilliodus
- † Gilliodus orvillei – type locality for species
- † Gilliodus peyeri – type locality for species
- † Girtyella
- †
Girtyspira
- † Girtyspira canaliculata – type locality for species
- † Gissocrinus
- † Glabrocingulum
Life restoration of the Carboniferous shark Glikmanius - Glomospira
- †
Glyphodeta
- † Glyphodeta terebriformis – type locality for species
- † Glyptambon
- † Glyptaster
- † Glyptocrinus
- † Glyptodesma
- † Glyptopora
- † Glyptorthis
Diagram depicting the restored internal anatomy and multiple views of the shell of the Silurian nautiloid cephalopod Gomphoceras - † Gomphocystites
- † Gorbyoceras
- †
Gosseletina
- † Gosseletina subglobosa – type locality for species
- † Granasporites
- †
Granatocrinus
- † Granatocrinus granulosus – tentative report
- †
Granulatisporites
- † Granulatisporites granularis
- † Granulatisporites minutus
- † Granulatisporites pallidus
- † Granulatisporites parvus – or unidentified comparable form
- † Granulatisporites tuberculatus
- † Graphiadactyllis
- †
Graphiadactylloides
- † Graphiadactylloides imopmemsos
- † Graphiadactylloides lineatus – or unidentified related form
- † Graphiadactylloides moridgei
- † Graphiadactylloides unionensis
- † Graphiadactylus
- † Graphosterigma
- † Graptodictya
- † Greenops
Multiple views of a fossil of the Ordovician horn coral Grewingkia - † Griffithidella
- † Gypidula
H
- † Hadroblastus
- † Hadrophyllum
Fossil of the Ordovician bryozoan ("moss animal") Hallopora - † Halysiocrinus
- † Halysites
- † Hamburgia
- † Haplistion
- † Hapsiphyllum
- † Harpidella
- † Harpidium – tentative report
- † Healdia
- † Hebertella
- † Hedeina
- † Hederella
- † Helicotoma
- † Heliolites
Fossil of the Middle Devonian horn coral Heliophyllum - † Helodus
- † Helopora
- † Hemitrypa
- † Hennigopora
- † Heslerodus
- † Hesperorthis
- † Heteralosia
- † Heterangium
- †
Heterophrentis
- † Heterophrentis annulata
- † Heterophrentis cyathiformis
- † Heterophrentis duplicata
- † Heterophrentis inflata
- † Heterophrentis irregularis
- † Heterophrentis nitida – tentative report
- † Heterophrentis ovalis
- † Heterophrentis prolifica
- † Heterophrentis rafinesqui
- † Heterophrentis simplex
- † Heterophrentis trisutura
- † Heterotrypa
Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone - † Hexameroceras
- † Hindella – tentative report
- † Hindia
- † Hippocardia
- †
Hirneacrinus
- † Hirneacrinus cupellaeformis – type locality for species
- † Hirneacrinus perplanus – type locality for species
- † Hiscobeccus
- † Histocrinus
- † Hizemodendron
- † Hoareicardia
- † Holcocrinus
- † Holcospermum
- †
Holocystites
- † Holocystites abnormalis
- † Holocystites abnormis
- † Holocystites alternatus
- † Holocystites clavus
- † Holocystites faberi – or unidentified comparable form
- † Holocystites ornatus
- † Holocystites ovatus
- † Holocystites parvulus
- † Holocystites perlongus
- † Holocystites scutellatus
- † Holocystites spangleri
- † Holocystites splendens
Fossilized shells of the Ordovician-Carboniferous sea snail Holopea - † Holtedahlina
- † Homalophyllum
- † Homocrinus
- † Homoeospira
- †
Homotrypa
- † Homotrypa alta – or unidentified related form
- † Homotrypa austini – or unidentified comparable form
- † Homotrypa communis
- † Homotrypa flabellaris
- † Homotrypa gelasinosa
- † Homotrypa nodulosa – or unidentified comparable form
- † Homotrypa richmondensis
- † Homotrypa wortheni
- † Homotrypella
- † Hondichnus
- † Hormotoma
- † Howellella
- †
Hydnoangulus – type locality for genus
- † Hydnoangulus quadratus – type locality for species
- † Hydriodictya – tentative report
- † Hylodecrinus
- Hyperammina
- †
Hypergonia
- † Hypergonia attenuata – type locality for species
- † Hypergonia turritella – type locality for species
- † Hypergonia vermicula – type locality for species
- † Hypselocrinus
I
- † Ichthyorachis
- † Icriodus
- † Icthyocrinus
- † Ildraites
- † Illaenoides
- † Illaenus
- † Imbrexia
- † Imitoceras
- †
Iniopera – type locality for genus
- † Iniopera richardsoni – type locality for species
Life restoration of the Carboniferous Chimaera relative Iniopteryx - † Inocaulis
- † Intrapora
- † Iocrinus
- † Ischadites
- † Ischyrodonta
- †
Isobuthus
- † Isobuthus pottsvillensis – type locality for species
- † Isochilina
- †
Isorthis
- † Isorthis arcuaria – or unidentified related form
Fossil of the Middle-Late Ordovician giant trilobite Isotelus.
K
- †
Kallimorphocrinus – type locality for genus
- † Kallimorphocrinus astrus – type locality for species
- † Kalymma
- † Karinopteris
- † Kaskia
- † Kindbladia
- † Kindleoceras
- † Kingstonia
- † Kionelasma
Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras - † Kionoceras bellense – or unidentified comparable form
- † Kionoceras cancellatum
- † Kionoceras delphiense
- † Kirkbya
- † Kirkbyella
- †
Kirkidium
- † Kirkidium knighti – or unidentified comparable form
- † Kirkidium laqueatum
- † Knightites
- † Knoxina
- † Knoxisporites
- †
Kodonophyllum
- † Kodonophyllum mulleri – or unidentified comparable form
Life restoration of the Silurian eurypterid ("sea scorpion") Kokomopterus - † Kosovopeltis
L
- † Labechia
- † Laevigatosporites
- † Lambeoceras
- † Lampadosocrinus
- †
Langepis
- † Langepis campbelli – type locality for species
- † Laurelocrinus
- † Leangella
- † Lebedictya
- † Lebetocrinus
- † Lecanocrinus
- † Lechritochoceras
- † Lecythiocrinus – tentative report
- † Leiorhynchus
- † Leiotriletes
- †
Leodicites
- † Leodicites imparilis – or unidentified related form
- † Leodicites variedentatus
- † Lepadocystis
- † Leperditia
- †
Lepetopsis
- † Lepetopsis levettei – type locality for species
- † Lepidocarpon
- † Lepidocyclus
Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911). - † Lepidodendron aculeatum
- † Lepidodendron baylense
- † Lepidodendron dichotomum
- † Lepidodendron hickii
- † Lepidodendron lanceolatum – tentative report
- † Lepidodendron latifolium
- † Lepidodendron modulatum
- † Lepidodendron obovatum
- † Lepidodendron ophiurus
- † Lepidodendron vestitum
- † Lepidodendron wortheni
- †
Lepidophloios
- † Lepidophloios hallii
- † Lepidophloios laricinus – or unidentified comparable form
- † Lepidophyllum
- †
Lepidostrobophyllum
- † Lepidostrobophyllum affine
- † Lepidostrobophyllum ovatifolius
- † Lepidostrobophyllum princeps – or unidentified comparable form
- †
Lepidostrobus
- † Lepidostrobus incertus – or unidentified comparable form
- † Lepidostrobus variabilis
- † Leptaena
- †
Leptoconocardium
- † Leptoconocardium catastomum – type locality for species
- † Leptodesma
- † Leptotrypella
- † Lesueurilla
- † Lichas
- † Lichenalia
- † Liljevallospira
- † Limoptera
Shell of the Cambrian-modern brachiopod Lingula - † Lingulops
- † Linoproductus
- † Linopteris
- † Liospira
- † Lissatrypa
- † Litocrinus
- † Llanoaspis – tentative report
- †
Lobatopteris
- † Lobatopteris vestita – or unidentified comparable form
- † Lobomelocrinus
- †
Lophoblastus
- † Lophoblastus inopinatus – or unidentified comparable form
- † Lophospira
- † Lophotriletes
- † Loxonema
- † Lumbriconerites
- † Lumectaster
- † Lunulazona – tentative report
- † Lycospora
- † Lyginorachis
- † Lyriocrinus
- † Lyrodesma
- † Lyropora
- † Lyroporella
- † Lysocystites
- † Lytospira
M
- †
Macrocrinus
- † Macrocrinus mundulus – tentative report
- † Macrocrinus strotobasilaris
- † Macrocrinus strotobasilarsis
- Macrocypris – tentative report
- † Macrostachya
- † Macrostylocrinus
- † Manicrinus
- † Manitoulinoceras
- † Marginatia
- † Marginirugus
- †
Mariopteris
- † Mariopteris hymenophylloides – tentative report
- † Mariopteris mazoniana
- † Mariopteris muricata
- † Mariopteris nervosa
- † Marsupiocrinus
- † Martinia
- † Maurotarion
- † Mediospirifer
- † Medullosa
- † Meekopora
- † Megakozlowskiella
- † Megalomphala
- † Megalomus
- † Megastrophia
- † Megistocrinus
- † Melocrinites
- † Melonechinus
- † Mendacella
- † Meniscophyllum
- † Menoeidina
- † Merista
Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella - † Meristina
- † Merocanites
- †
Mesocyridira
- † Mesocyridira bifurcata
- † Mesocyridira flagrocosta
- † Mesocyridira keokuk
- † Mesocyridira pallaensis – or unidentified related form
- † Mesocyridira pellaensis – or unidentified related form
- † Mesocyridira washingtonensis
- † Mesoleptostrophia
- † Mesoneuron
- † Mesotrypa
- † Metriophyllum
- † Miamoceras
- † Michelinia
- †
Microantyx
- † Microantyx botoni – type locality for species
- † Microcheilinella
- † Microplasma
- † Microreticulatisporites
- † Mirocheilinella
- † Mixoneura – tentative report
- †
Modiolopsis
- † Modiolopsis concentrica – tentative report
- † Modiolopsis modiolaris
- † Modiolopsis versaillesensis
- † Modiomorpha
- † Monodechenella
- † Monomorella
- † Monotrypa
- † Monotrypella
- † Mooreisporites
- † Mooreoceras
- † Mourlonia
- † Mucophyllum
Fossilized shell of the Devonian brachiopod Mucrospirifer - † Muensteroceras
- †
Mulceodens
- † Mulceodens jaanussoni – or unidentified comparable form
- †
Murchisonia
- † Murchisonia laphami
- † Murchisonia subulata
- † Murchisonia vincta – type locality for species
- † Murchisonida
- † Myalina
- † Myelodactylus
- † Mysticocrinus
N
- †
Natica
- † Natica littonana – type locality for species
- † Naticonema
Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis - † Naticopsis carleyana – type locality for species
- † Naticopsis plebeia
- † Navispira
- †
Neilsonia
- † Neilsonia insculpta – type locality for species
- † Nematopora
- †
Neolageniocrinus
- † Neolageniocrinus cassidus – type locality for species
- † Neopalaeaster
- † Neozaphrentis
- † Nereidavis
Fossilized frond of the Carboniferous seed fern Neuropteris - † Nicklesopora
- † Nikiforovella
- † Nipterocrinus
- † Nucleocrinus
- †
Nucleospira
- † Nucleospira concentrica – or unidentified comparable form
- † Nucleospira concinna
- † Nucleospira pisiformis
- † Nucleospira rowleyi – or unidentified related form
- † Nucularca
- † Nuculites
- † Nuculopsis
O
- † Odontophyllum
Restoration of the Late Ordovician-Middle Devonian trilobite Odontopleura - † Odontopteris
- † Ohiocrinus
- † Oligocarpia
- †
Omospira
- † Omospira alexandra – or unidentified comparable form
- †
Omphalophloios
[1]
- † Omphalophloios wagneri – type locality for species [1]
- † Oncoceras
- † Onniella
- † Onychaster
Fossil of the Carboniferous crinoid ("sea lily") Onychocrinus - † Onychopterella
- † Oonoceras
- † Ophiletina
- † Opisthoptera
- † Orbiculoidea
- †
Oriostoma
- † Oriostoma globosum – or unidentified comparable form
- † Oriostoma hoyi
- †
Ornithoprion – type locality for genus
- † Ornithoprion hertwigi – type locality for species
Restoration of the Carboniferous-Permian cartilaginous fish Orodus - † Orodus greggi – type locality for species
- † Orodus micropterygius – type locality for species
- † Orthis
- † Orthodesma
- † Orthonybyoceras
- † Orthonychia
- † Orthopleura
- † Orthostrophia
- † Orthotetes
- † Ortonella
- † Osgoodicystis
- † Otarion
- †
Ovatia
- † Ovatia ovata – tentative report
- † Ovatia ovatus
- †
Oxyprora
- † Oxyprora carinatum – type locality for species
P
- † Pachydictya
- † Pachylocrinus
- †
Pachytesta
- † Pachytesta vera – or unidentified comparable form
- † Palaeacis
- † Palaeocapulus
- † Palaeoconcha
- † Palaeoneilo
- † Palaeostachya
- † Paleofavosites – tentative report
- † Paleospora
- † Paleostachya
- † Paliphyllum
- † Palmatolepis
- † Palmatopteris
- †
Paolia – type locality for genus
- † Paolia vetusta – type locality for species
- †
Paoliola
- † Paoliola gurleyi – type locality for species
- † Paracolocrinus
- †
Paraconularia
- † Paraconularia chesterensis – tentative report
- † Paraconularia crawfordsvillensis
- † Paracyclas
- † Paradichocrinus
- † Paragazacrinus
- †
Parallelodon
- † Parallelodon obsoletus – tentative report
- † Parallelodon tenuistriatus
- † Paralycopodites
- † Paraparchites
Assemblage of the Early-Middle Devonian brachiopod Paraspirifer - † Parazyga
- † Parichthyocrinus
- † Parisocrinus
- † Parvohallopora
- † Passalocrinus
- † Patelliocrinus
- † Paulicystis
- † Paulocrinus
- †
Paupospira
- † Paupospira bowdeni
- † Paupospira moorei – type locality for species
- † Paupospira tropidophora
Fossils of the Late Devonian-Permian fern-like fronds Pecopteris - † Pecopteris cisti
- † Pecopteris clintoni
- † Pecopteris miltonii
- † Pecopteris polymorpha
- † Pecopteris pseudovestita – tentative report
- † Pecopteris serpillifolia – tentative report
- † Pecopteris squamosa
- † Pelagiella
- † Pellecrinus
- † Pemtremites
- † Penniretepora
- † Pennsylvanioxylon
- † Pentacystis
- † Pentagonia
- † Pentamerella
- † Pentameroceras
- † Pentamerus
- † Pentaramicrinus
Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites - † Pentremites abruptus
- † Pentremites angularis
- † Pentremites buttsi
- † Pentremites clavatus
- † Pentremites conoideus
- † Pentremites elegans
- † Pentremites girtyi
- † Pentremites halli
- † Pentremites hambachi
- † Pentremites maccalliei
- † Pentremites okawensis
- † Pentremites patei
- † Pentremites platybasis
- † Pentremites pyramidatus
- † Pentremites pyriformis
- † Pentremites robustus
- † Pentremites springeri
- † Pentremites symmetricus
- † Pentremites tulilpaformis
- † Pentremites tulipaformis
- † Pentremites welleri
- † Pentremitidea – tentative report
- † Perditocardinia
- † Periastron
- † Pericyclus
- † Periechocrinites
Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus - † Peronopora
- † Petalocrinus
- † Petigopora
- † Petrocrania
- † Phacelocrinus
Fossil of the Late Ordovician-Late Devonian trilobite Phacops - † Phaenopora
- † Phaenoschisma
- † Phanocrinus
- † Phestia
- † Philhedra
- † Phillipsia
- † Phimocrinus – report made of unidentified related form or using admittedly obsolete nomenclature
- † Pholadomorpha
- † Pholidops – report made of unidentified related form or using admittedly obsolete nomenclature
- † Pholidostrophia
- † Phosphannulus
- † Phractopora
- † Phragmoceras
- † Phragmodictya
- † Phragmolites
- † Phymatophyllum
- † Physospongia
- † Pietzschia
- † Pinna
- † Pinnularia
- †
Pisocrinus
- † Pisocrinus benedicti – or unidentified comparable form
- † Pisocrinus campana
- † Pisocrinus gemmiformis
- † Pisocrinus gorbyi
- † Pisocrinus quinquelobus
Fossilized shell of the Ordovician brachiopod Plaesiomys - † Planalvus – tentative report
- † Plasmopora
- † Platyaxum
Fossilized shell of the Silurian-Early Triassic sea snail Platyceras - † Platyceras argo – tentative report
- † Platyceras brownsportense
- † Platyceras bucculentum
- † Platyceras clintonensis
- † Platyceras cornutum – or unidentified comparable form
- † Platyceras crassum
- † Platyceras daytonense
- † Platyceras echinatum
- † Platyceras erectum
- † Platyceras lineatum
- † Platyceras niagarense
- † Platyceras niagarensis
- † Platyceras plebium
- † Platycrinites
- † Platycrinus
- † Platyrachella
Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia - † Platystrophia acutilirata
- † Platystrophia annieana
- † Platystrophia attenuata
- † Platystrophia biforata – or unidentified comparable form
- † Platystrophia clarksvillensis
- † Platystrophia cummingsi
- † Platystrophia cypha
- † Platystrophia daytonensis
- † Platystrophia elkhornensis
- † Platystrophia foerstei
- † Platystrophia hopensis
- † Platystrophia laticosta
- † Platystrophia moritura
- † Platystrophia ponderosa
- †
Platyzona
- † Platyzona trilineata – type locality for species
- † Pleapopleurus
- †
Pleapopluerus
- † Pleapopluerus tenuicostatus – tentative report
- † Plectatrypa
- † Plectodonta
- † Plectorthis
- † Plectospira
- † Plectospirifer
- †
Pleurocornu
- † Pleurocornu amissum – or unidentified comparable form
Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum - † Pleuronotus
- † Pleurorthoceras
- † Poleumita
Various conodont elements of Polygnathus - † Polypora
- †
Polysacos – type locality for genus
- † Polysacos vickersianum – type locality for species
- † Polytryphocycloides
- † Polyxylon
- † Portlockiella
- † Poterioceras – tentative report
- †
Poteriocrinites
- † Poteriocrinites amplus – type locality for species
- † Potonieisporites
- † Prasopora
- Priscopedatus
- † Prismopora
- † Pristiograptus
- † Probillingsites
- Proboscina
- † Prodromites
- † Productus
Restoration of the Silurian trilobite Proetus - † Prolecanites
- † Prolecythiocrinus
- †
Promexyele
- † Promexyele bairdi
- † Promexyele peyeri – type locality for species
- † Propora
- † Prosolarium
- † Protaraea
- † Protatrypa
- † Proteonina
- † Protocalamites
- † Protocanites
- † Protochonetes – tentative report
- † Protokoinoceras
- † Protolepidodendron
- † Protoleptostrophia
- † Protomegastrophia
- †
Protoniella
- † Protoniella parva – or unidentified related form
- † Protophragmoceras
- † Protosalvinia
- Psammosphaera
Life restoration of the Devonian-Permian tree fern Psaronius. Auguste Faguet (1877). - † Pseudagnostus
- † Pseudastrorhiza
- † Pseudaviculopecten
- † Pseudoatrypa
- † Pseudobythocypris
- † Pseudocolpomya
- † Pseudolingula
- † Pseudostrohiza
- † Pseudosyrinx
- †
Pseudozygopleura
- † Pseudozygopleura yandellana – type locality for species
- † Psiloconcha
- † Psilokirkbyella
Interior and exterior of the shell of a Pteria, or winged oyster - † Pterinea
- † Pterinopecten
- † Pterocephalia
- †
Pterotheca
- † Pterotheca expansa
- † Pterotheca intermedia – type locality for species
- †
Pterotocrinus
- † Pterotocrinus acutus
- † Pterotocrinus armatus – or unidentified comparable form
- † Pterotocrinus bifurcatus
- † Pterotocrinus birfurcatus
- † Pterotocrinus convexus
- † Pterotocrinus depressus
- † Pterotocrinus lingulaformis
- † Pterotocrinus rugosus
- † Pterotocrinus spatulatus
Restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus - † Ptychocarpus
- † Ptychopleurella
- † Ptylopora
- † Punctatisporites
- † Punctatosporites
- † Punctospirifer
- † Pustulocystis
- † Pycnosaccus
_-_Pteriidae_-_Mollusc_shell.jpeg)
Q
- † Quasillinites
- † Quasillites – tentative report
- † Quassilites
R
- † Rafinesquina
- † Raistrickia
- †
Raphistomina
- † Raphistomina modesta – or unidentified comparable form
- † Rasmussenoceras
- † Rectifenestella
- †
Rectobaidia
- † Rectobaidia fragosa – or unidentified related form
- † Reimannia
- † Renalcis – tentative report
- † Renaultia
- Reophax
- † Resserella
- † Reticulariina
- † Reticulatisporites
- † Reticulitriletes
- † Reticulopteris
- †
Retispira
- † Retispira textilis – type locality for species
- † Retoporina
- † Retrorsirostra
- † Retzia
- †
Rhabdocarpus
- † Rhabdocarpus mamillatus
- † Rhabdocarpus mansfieldi – or unidentified comparable form
- † Rhabdocarpus multistriatus
- † Rhabdomeson
- † Rhadinichthys
- † Rhegmaphyllum – tentative report
- †
Rhineoderma
- † Rhineoderma nodulostriata – type locality for species
- † Rhineoderma wortheni – type locality for species
- † Rhinidictya
- † Rhipdomella
- † Rhipidium
- †
Rhipidomella
- † Rhipidomella hybrida
- † Rhipidomella missouriensis
- † Rhipidomella penelope
- † Rhipidomella perminuta
- † Rhipidomella tenuicosta – or unidentified comparable form
- † Rhipidomella vanuxemi
- † Rhipidothyris
- † Rhombopora
- † Rhombotrypa
Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella - †
Rhynchopora
- † Rhynchopora beecheri
- † Rhynchopora perryensis – tentative report
- † Rhynchopora rowleyi – tentative report
- † Rhynchotrema
- † Rhynchotreta
- † Rhysocamax
- † Rhytimya
- †
Richmondoceras – type locality for genus
- † Richmondoceras brevicameratum – type locality for species
- †
Rineceras
- † Rineceras digonum – tentative report
- †
Romingerella
- † Romingerella major – or unidentified comparable form
- † Romingeria
- † Ropalonaria
- † Rota
- † Rotiphyllum
- † Roundyella
- † Rugomena
- † Rugosochonetes
S
- † Saccocrinus
- † Saccosompsis
- † Saffordotaxis
- † Salpingostoma
- †
Samaropsis
- † Samaropsis crampii – or unidentified comparable form
- † Sandalodus
- †
Sanguinolites
- † Sanguinolites herricki – tentative report
- † Sanguinolites tropidophorus
- † Sapphicorhynchus
- † Sarocrinus
- † Savitrisporites
- † Scalarituba
- † Scalites
- † Scenophyllum
- † Schellwienella
- † Schizobolus
- † Schizonema – tentative report
- † Schizophoria
- † Schlotheimophyllum
- † Schoenaster
- † Schopfites
- †
Schuchertella
- † Schuchertella costatula
- † Schuchertella lens – tentative report
- † Schuchertella subplana
- † Schuchertoceras
- † Schulzospora
Fossilized calyx of the Carboniferous crinoid ("sea lily") Scytalocrinus - † Scytalocrinus decadactylus
- † Scytalocrinus disparilis – or unidentified comparable form
- † Scytalocrinus robustus
- † Senftenbergia
- † Septopora
- † Serpulopsis
- † Serpulospira
- † Setigerites
- † Shideleroceras
- † Shivaella
- †
Sibyrhynchus – type locality for genus
- † Sibyrhynchus denisoni – type locality for species
- † Siderella
- † Sidetes
- † Sievertsia
Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria - † Sigillaria brardii
- † Sigillaria davreuxi
- † Sigillaria kidstoni – tentative report
- † Sigillaria mamillaris – or unidentified comparable form
- † Sigillaria monostigma
- † Sigillaria scutellata
- † Sigillariostrobus
- †
Silenites
- † Silenites warei – or unidentified comparable form
- † Sinochonetes
- † Sinuites
- † Sinuitina
- † Siphonophrentis
- † Skelidorygma
- † Skenidioides
- Sorosphaera – tentative report
- † Sowerbyella
- †
Spackmanites
- † Spackmanites facierugosus – or unidentified comparable form
- † Spackmanites habibii
- † Spathella
- † Spathiocaris
- †
Spathognathodus
- † Spathognathodus snadjri – or unidentified comparable form
- † Spatiopora
- † Sphaerexochus
- † Sphaerirhynchia
- † Sphaerocodium
- † Sphaerocyclus – report made of unidentified related form or using admittedly obsolete nomenclature
- † Sphenophyllostachys
Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum - † Sphenopteris
- †
Sphenosphaera
- † Sphenosphaera mohri
- † Sphenosphaera subangularis – type locality for species
- † Spinocyrtia
- † Spinozonotriletes
- † Spinulicosta
- † Spinyplatyceras
Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer - † Spirifer angusta
- † Spirifer bifurcatus
- † Spirifer byrnesi
- † Spirifer crawfordsvillensis
- † Spirifer floydensis – tentative report
- † Spirifer fornaculus
- † Spirifer increbescens
- † Spirifer keokuk
- † Spirifer macrus
- † Spirifer montgomeryensis
- † Spirifer mundulus – or unidentified comparable form
- † Spirifer pellaensis – tentative report
- † Spirifer rostellatus
- † Spirifer shepardi – or unidentified related form
- † Spirifer shephardi – or unidentified related form
- † Spirifer tenuicostatus
- † Spirifer tenuimarginatus
- † Spirifer varicosus
- † Spirifer veronensis – or unidentified comparable form
- † Spirifer washingtonensis
- Spiropteris
Modern shells of the polychaete worm Spirorbis - † Spiroscala
- † Sporangites
- †
Springericrinus
- † Springericrinus doris – tentative report
- † Springericrinus magniventrus – tentative report
- † Spyroceras
- † Stacheia
- † Staurocephalus
- †
Stegerhynchus
- † Stegerhynchus indianense
- † Stegerhynchus indianensis
- † Stegerhynchus neglectum – or unidentified comparable form
- † Stegerhynchus neglectus
- † Stegerhynchus whitii
- † Stelastellara
- †
Stelliporella
- † Stelliporella lamellata – or unidentified comparable form
- †
Stenoloron
- † Stenoloron swallovana – type locality for species
- † Stenopareia
- † Stenoscisma
- † Stephanocrinus
- †
Stereolasma
- † Stereolasma exile – tentative report
- † Stereolasma parvulum
- †
Stethacanthulus – type locality for genus
- † Stethacanthulus longipeniculus – type locality for species
- † Stethacanthulus meccaensis
Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus - † Stethacanthus altonensis
- † Stethacanthus longipeniculus – type locality for species
- † Stictoporina
- † Stigmaria
- † Stigmatella
- † Stinocrinus
- † Stiptocrinus
- Stomatopora
- †
Straparollus
- † Straparollus planodiscus
- † Straparollus quadrivolvis – type locality for species
- † Straparollus spergenensis – type locality for species
- † Streblotrypa
- † Streblotrypella
- † Streptelasma
- †
Striatopora
- † Striatopora alba – tentative report
- † Striatopora bellistriata
- † Striatopora cavernosa
- † Striatopora flexuosa
- † Stricklandia – tentative report
- † Striispirifer
- † Stromatopora
- † Stropeodonta
- † Stropheodonta
- † Strophochonetes
- † Strophodonta
Fossilized shell of the Ordovician-Silurian brachiopod Strophomena - † Strophonella
- † Strophostylus
- † Styliolina
- † Stylolina
- † Subglobosochonetes
- † Sulcatina
- † Sulcoretepora
- †
Sumixam – type locality for genus
- † Sumixam maximus – type locality for species
- † Sutcliffia
- † Synbathocrinus
- † Synchysidendron
Fossil of the Devonian tabulate coral Syringopora - † Syringoporida
- †
Syringothyris
- † Syringothyris subcuspidatus – or unidentified comparable form
- † Syringothyris textus
T
- † Tabulipora
- † Taeniodictya
- † Tamiobatis
- † Tasmanites
Fossil of the Silurian-Carboniferous crinoid ("sea lily") Taxocrinus (right) - † Taxocrinus colletti
- † Taxocrinus ungula – tentative report
- † Tentaculites
- † Tetradium
- † Tetranota
- †
Tetrasacculus
- † Tetrasacculus stewarte – tentative report
- † Thalamocrinus
Fossils of the burrow ichnogenus Thalassinoides - † Thalassoinoides
- † Thamniscus
- † Thamnopora
- †
Thamnoptychia
- † Thamnoptychia alpenensis
- † Thamnoptychia tuberculata – type locality for species
- †
Thecia
- † Thecia minor – or unidentified comparable form
- † Thuraminoides
- Thurammina
- † Thuramminoides
- †
Thuroholia
- † Thuroholia spicatus – type locality for species
- † Thymospora
- † Tolypaminna
- †
Tolypammina
- † Tolypammina bransoni
- † Tolypammina bulbosa
- † Tolypammina cyclops
- † Tolypammina gersterensis
- † Tolypammina jacobschapelensis
- † Tolypammina laocoon – or unidentified related form
- † Tolypammina rotula
- † Torispora
- † Torynifer
- † Tremanotus
- † Trematis
- † Trematocystis
- † Trematopora
- † Trepeilopsis
Fossilized shell of the Ordovician nautiloid cephalopod Treptoceras - †
Triamara
- † Triamara laevis
- † Triamara tumida
- † Triamara ventricosa – type locality for species
- †
Triangulotarbus – type locality for genus
- † Triangulotarbus terrehautensis – type locality for species
- † Tricopelta
Fossil of the Cambrian trilobite Tricrepicephalus - † Trigonocarpus
- † Trigonoglossa
- † Trimerella
- † Trimerus
- † Trimoceras
- † Triplesia
- † Triquitrites
- †
Trochonema
- † Trochonema madisonense
- † Trochonema umbilicata – or unidentified comparable form
- † Trochophyllum
- † Troosticrinus
- † Trophocrinus
- † Tropidocaris
- † Tropidoleptus
- † Tryplasma
- † Tubelelloides
- † Tuberculatosporites
- † Tubulelloides
- †
Turneropterum – type locality for genus
- † Turneropterum turneri – type locality for species
- † Turrilepas
- †
Twenhofelella
- † Twenhofelella waldroni – type locality for species
- † Tylothyris
U
- †
Undulabucania
- † Undulabucania gorbyi – type locality for species
- †
Unispirifer
- † Unispirifer lateralis
- † Unispirifer rundlensis – or unidentified related form
- † Uperocrinus
V
- † Valvisporites
- † Vandelooaster
- †
Vaurealispongia
- † Vaurealispongia minuta – type locality for species
- † Vermiforichnus
- † Vermiformichnus
- † Verrucosisporites
- † Vesicaspora
- † Vesicasporites
- † Vestispora
- † Voiseyella
- †
Voiseyells
- † Voiseyells novamexicana – or unidentified related form
- † Vorticina
W
- † Waltzispora
- † Warsawia
- † Waylandella
- † Welleroceras
- † Whitfieldella
- † Whitfieldoceras – tentative report
- † Whittleseya
- † Wilsonicrinus
- † Wilsoniella
- † Wilsonites
- † Worthenopora
X
Y
- † Youngiella – tentative report
Z
- † Zaphrenthis
- † Zeacrinites
- † Zittelloceras
- † Zonidiscus
Fossil of the feeding trace ichnogenus Zoophycos - † Zophocrinus
- † Zygospira
References
- ^ a b Stanislav Opluštil; Josef Pšenička; Jiří Bek (2019). "Omphalophloios wagneri sp. nov., a new sub-arborescent lycopsid from the middle Moscovian (Middle Pennsylvanian) of the Illinois Basin, USA". Review of Palaeobotany and Palynology. 271: Article 104105. doi: 10.1016/j.revpalbo.2019.104105.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
