Selected Paleozoic taxa of Indiana

• 

  Fossilized calyx of the Carboniferous crinoid ("sea lily") Abrotocrinus
  †Abrotocrinus
  • †Abrotocrinus coreyi
  • †Abrotocrinus nodosus
  • †Abrotocrinus unicus
• †Achistrum
  • †Achistrum brevis – type locality for species
  • †Achistrum ludwigi
  • †Achistrum nicholsoni
  • †Achistrum triassicum
• †Acidaspis
• † Acrophyllum
• †Actinocrinites
  • †Actinocrinites gibsoni
  • †Actinocrinites grandissimus
  • †Actinocrinites lobatus – tentative report
  • †Actinocrinites lowei
• †Agaricocrinus
  • †Agaricocrinus americanus
• †Aipoceras – tentative report
• 

  Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
  †Alethopteris
  • †Alethopteris davreuxi
  • †Alethopteris decurrens
  • †Alethopteris grandini
  • †Alethopteris lonchitica
  • †Alethopteris owenii
  • †Alethopteris serlii
• Ammodiscus
• †Ammonellipsites
• †Amplexopora
• †Amplexus
• †Anchiopsis
• †Angustidontus
• †Annularia
  • †Annularia mucronata
  • †Annularia radiata
  • †Annularia sphenophylloides
  • †Annularia stellata
• †Aphlebia
• 

  Fossils of the Carboniferous-Permian bryozoan Archimedes
  †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
• †Arctinurus
• †Armenoceras
• †Artisia
• †Asterotheca
  • †Asterotheca crenulata
  • †Asterotheca cyathea
  • †Asterotheca hemitelliodes
  • †Asterotheca miltoni
  • †Asterotheca oreopteridia
• 

  Life restoration of the Early Devonian club moss relative Asteroxylon
  †Asteroxylon
• †Athyris
  • †Athyris fultonensis
  • †Athyris lamellosa
  • †Athyris parvirostra
  • †Athyris spiriferoides
• †Atrypa
  • †Atrypa newsomensis
  • †Atrypa parva – or unidentified comparable form
  • †Atrypa reticularis
  • †Atrypa reticularus
• †Aulacophyllum
• †Aulopora
  • †Aulopora edithana
  • †Aulopora microbuccinata
  • †Aulopora tubiporoides
• †Aviculopecten
  • †Aviculopecten colletti
  • †Aviculopecten invalidus
  • †Aviculopecten spinuliferus
  • †Aviculopecten terminalis
• † Avonia – tentative report
• † Avonia
• 

  Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
  †Bellerophon
  • †Bellerophon gibsoni – type locality for species
  • †Bellerophon jeffersonensis
  • †Bellerophon spergensis – type locality for species
• †Bembexia
• †Beyrichoceras
• †Bordonia
• †Bumastus
  • †Bumastus armatus – or unidentified comparable form
  • †Bumastus insignis
  • †Bumastus ioxus
  • †Bumastus niagarense – or unidentified comparable form
• †Calamites
  • †Calamites cruciatus
  • †Calamites suckowii
• 

  Fossilized fronds of the Carboniferous seed fern Callipteridium
  †Callipteridium
• †Callixylon
• †Calymene
  • †Calymene breviceps
  • †Calymene celebra
  • †Calymene niagarensis
• †Camarotoechia
  • †Camarotoechia gregaria – tentative report
  • †Camarotoechia horsfordi
  • †Camarotoechia mutata
  • †Camarotoechia neglecta – or unidentified comparable form
  • †Camarotoechia pisa
  • †Camarotoechia tethys
• 

  Fossil of the Silurian eurypterid ("sea scorpion") Carcinosoma
  †Carcinosoma
• †Caseodus
  • †Caseodus eatoni – type locality for species
• †Ceramopora
  • †Ceramopora imbricata
  • †Ceramopora vesicularis
• †Ceraurinus
• †Ceraurus
• †Chancelloria
• †Charactoceras
• †Cheirurus
• †Chomatodus
• †Chondrites
• †Chonetes
  • †Chonetes geniculatus
• †Cincinnetina
  • †Cincinnetina meeki
  • †Cincinnetina multisecta
• †Cladochonus
  • †Cladochonus beecheri
  • †Cladochonus crassus
  • †Cladochonus longi
• 

  Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina
  †Cleiothyridina
  • †Cleiothyridina hirsuta
  • †Cleiothyridina sublamellosa
• †Clorinda – tentative report
• †Coenites
  • †Coenites brownsportensis
  • †Coenites cryptodens – or unidentified comparable form
  • †Coenites laqueata – or unidentified comparable form
  • †Coenites rectilineatus
• †Columnaria
  • †Columnaria alveolata
• †Composita
  • †Composita subquadrata
  • †Composita sulcata
  • †Composita trinuclea
• †Conchidium
• †Conocardium
  • †Conocardium richmondense – type locality for species
• 

  Fossil of the Ordovician bryozoan Constellaria
  †Constellaria
• †Coolinia
• †Cordaites
  • †Cordaites borassifolius
  • †Cordaites crassinervis
  • †Cordaites principalis
• †Cornulites
  • †Cornulites formosa
  • †Cornulites proprius
• †Coronura
• †Crania
• †Craniops
• †Crotalocrinites
• 

  Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites
  †Cyathocrinites
  • †Cyathocrinites glenni – or unidentified comparable form
  • †Cyathocrinites multibrachiatus
  • †Cyathocrinites parvibrachiatus
  • †Cyathocrinites pauli
  • †Cyathocrinites sanduskyensis
  • †Cyathocrinites striatissimus
  • †Cyathocrinites wilsoni
• †Cyclonema
• †Cyclopteris
• †Cyphaspis
• †Cypricardinia
  • †Cypricardinia indenta
  • †Cypricardinia scitula
• †Cyrtolites
• †Cyrtospirifer
• †Cystodictya
  • †Cystodictya lineata
• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
  †Dalmanites
  • †Dalmanites halli
  • †Dalmanites limulurus
• †Danaea
• †Decadocrinus
  • †Decadocrinus depressus
• †Dicoelosia
• †Dictyonema
• †Dimerocrinites
  • †Dimerocrinites carleyi
  • †Dimerocrinites inornatus
  • †Dimerocrinites occidentalis
• †Dinicthys
• †Dizygocrinus
  • †Dizygocrinus indianaensis
  • †Dizygocrinus indianensis
  • †Dizygocrinus venustus – or unidentified comparable form
  • †Dizygocrinus whitei – or unidentified comparable form
• †Drepanopterus
• 

  Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus
  †Edestus
  • †Edestus heinrichi
• †Edmondia
• †Eldredgeops
  • †Eldredgeops rana
• †Elytron
• †Emmonsia
• †Encrinurus
• Eocaudina
• †Eodictyonella
• †Eospirifer
  • †Eospirifer eudora
  • †Eospirifer foggi
  • †Eospirifer niagarensis
  • †Eospirifer radiatus
• †Eretmocrinus
  • †Eretmocrinus cassedayanus – tentative report
  • †Eretmocrinus magnificus
• †Erieopterus
• †Eucalyptocrinites
  • †Eucalyptocrinites caelatus
  • †Eucalyptocrinites crassus
  • †Eucalyptocrinites tuberculatus
• 

  Fossil of the Late Ordovician-Permian tabulate coral Favosites
  †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
• †Fenestella
  • †Fenestella burlingtonensis
  • †Fenestella cestriensis
  • †Fenestella exigua
  • †Fenestella matheri
• †Fletcheria
• †Flexicalymene
  • †Flexicalymene meeki
• †Gilbertsocrinus
• 

  Life restoration of the Carboniferous shark Glikmanius
  †Glikmanius
  • †Glikmanius occidentalis
• †Glyptambon
• †Glyptocrinus
• †Gomphoceras
• †Greenops
• †Grewingkia
  • †Grewingkia canadensis
  • †Grewingkia rusticum
• †Hallopora
  • †Hallopora elegantula
  • †Hallopora subnodosa
• 

  Fossil of the Ordovician-Silurian tabulate coral Halysites
  †Halysites
  • †Halysites catenularia
  • †Halysites labyrinthicus
  • †Halysites microporus
• †Harpidium – tentative report
• †Heliophyllum
  • †Heliophyllum agassizi
  • †Heliophyllum denticulatum
  • †Heliophyllum halli
  • †Heliophyllum incrassatum
  • †Heliophyllum latericrescens
  • †Heliophyllum venatum
  • †Heliophyllum verticale
• 

  Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone
  †Hexagonaria
  • †Hexagonaria bella
  • †Hexagonaria cincta
  • †Hexagonaria curta
  • †Hexagonaria ovoidea
  • †Hexagonaria partita
  • †Hexagonaria ponderosa
  • †Hexagonaria prisma
• †Hexameroceras
• †Hindia
• †Holopea
• †Hyolithes
• †Icriodus
• †Illaenus
• 

  Life restoration of the Carboniferous Chimaera relative Iniopteryx
  †Iniopteryx
  • †Iniopteryx rushlaui
• †Iocrinus
• †Isotelus
  • †Isotelus gigas
  • †Isotelus maximus
• †Kindleoceras
• †Kingstonia
• †Kionoceras
• †Kokomopterus
• †Lambeoceras
• 

  Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911).
  †Lepidodendron
  • †Lepidodendron aculeatum
  • †Lepidodendron dichotomum
  • †Lepidodendron lanceolatum – tentative report
  • †Lepidodendron obovatum
  • †Lepidodendron vestitum
• †Lepidophyllum
• †Lepidostrobus
• †Lichas
• †Lingula
• †Llanoaspis – tentative report
• †Manitoulinoceras
• †Marsupiocrinus
• †Martinia
• †Melonechinus
• †Meristella
• †Meristina
• †Microplasma
• †Mucrospirifer
  • †Mucrospirifer mucronatus
  • †Mucrospirifer profundus
  • †Mucrospirifer prolificus
• †Murchisonia
• †Natica
• †Naticopsis
  • †Naticopsis carleyana – type locality for species
• 

  Fossilized frond of the Carboniferous seed fern Neuropteris
  †Neuropteris
  • †Neuropteris fimbriata
  • †Neuropteris flexuosa
  • †Neuropteris heterophylla
  • †Neuropteris obliqua
  • †Neuropteris ovata
  • †Neuropteris rarinervis
  • †Neuropteris scheuchzeri
  • †Neuropteris tenuifolia
• †Odontopleura – tentative report
• †Oncoceras
• †Onychocrinus
• †Onychopterella
• †Oonoceras
• †Ornithoprion – type locality for genus
• 

  Restoration of the Carboniferous-Permian cartilaginous fish Orodus
  †Orodus
• †Palmatolepis
• †Paolia – type locality for genus
• †Paraspirifer
• †Pecopteris
• †Pelagiella
• †Pentagonia
• †Pentameroceras
• †Pentamerus
• †Pentremites
  • †Pentremites tulipaformis
• †Periastron
• †Periechocrinus
• 

  Fossil of the Late Ordovician-Late Devonian trilobite Phacops
  †Phacops
• †Phillipsia
• †Phragmolites
• †Pinna
• †Pinnularia
• †Plaesiomys
• †Platyceras
  • †Platyceras bucculentum
• †Platycrinites
• †Platystrophia
  • †Platystrophia acutilirata
  • †Platystrophia annieana
  • †Platystrophia clarksvillensis
  • †Platystrophia cypha
  • †Platystrophia moritura
• †Plectodonta
• †Pleurodictyum
• †Pleurorthoceras
• †Poleumita
• †Polygnathus
• †Polysacos – type locality for genus
• Priscopedatus
• †Proetus
• †Protochonetes – tentative report
• †Protosalvinia
• †Psaronius
• †Pteria
• †Pterotheca
• 

  Life restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus
  †Pterygotus
• †Quasillites – tentative report
• †Retzia
• †Rhadinichthys
• †Rhynchonella
• †Richmondoceras – type locality for genus
• †Rineceras
• †Rota
• †Samaropsis
• †Sandalodus
• †Scytalocrinus
• †Sidetes
• 

  Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria
  †Sigillaria
  • †Sigillaria brardii
  • †Sigillaria scutellata
• †Skenidioides
• †Sowerbyella
• †Spathognathodus
• †Sphaerexochus
• †Sphaerocodium
• †Sphenophyllum
  • †Sphenophyllum cuneifolium
  • †Sphenophyllum emarginatum
  • †Sphenophyllum myriophyllum
  • †Sphenophyllum plurifoliatum
• †Sphenopteris
• †Spirifer
• Spirorbis
• †Spyroceras
• 

  Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
  †Stethacanthus
  • †Stethacanthus altonensis
• †Stigmaria
• †Stigmatella
• †Strophomena
  • †Strophomena concordensis
  • †Strophomena erratica
  • †Strophomena extenuata
  • †Strophomena neglecta
  • †Strophomena nutans
  • †Strophomena planumbona
  • †Strophomena sulcata
• †Syringopora
• †Taxocrinus
• †Tentaculites
• †Tetradium
• †Thalassinoides
• †Treptoceras
• †Tricrepicephalus
• †Trimerus
• †Zittelloceras
• †Zoophycos