page_title: List of the prehistoric life of Illinois
section_title: Selected Paleozoic taxa of Illinois
hierarchical_section_title: List of the prehistoric life of Illinois / Paleozoic / Selected Paleozoic taxa of Illinois
caption_attribution_description: English: Crop of original file in file name
context_page_description: This list of the prehistoric life of Illinois contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Illinois.
context_section_description: †Achatella
  †Actinoceras
  †Alethopteris
  †Alethopteris decurrens
  †Alethopteris lonchitica
  †Alethopteris owenii
  †Alethopteris serlii
   †Amphibamus – type locality for genus
  †Amphibamus grandiceps – type locality for species
  †Amphiscapha
  †Amynilyspes – type locality for genus
  †Annularia
  †Annularia asteris – or unidentified comparable form
  †Annularia stellata
  †Anomphalus – type locality for genus
  †Anthracoceras
  †Archaeocidaris – tentative report
  †Archaeopteris
  †Archimedes
  †Archimedes communis
  †Archimedes compactus
  †Archimedes invaginatus
  †Archimedes lativolvis
  †Archimedes macfarlani
  †Archimedes swallovanus
  †Archimedes terebriformis
  †Archimylacris
  †Arctinurus
   †Arthrolycosa – type locality for genus
  †Artisia
  †Asterotheca
  †Asterotheca miltoni – or unidentified comparable form
  †Asyncritus – type locality for genus
  †Athyris
  †Atrypa
  †Atrypa reticularis – report made of unidentified related form or using admittedly obsolete nomenclature
  †Aviculopecten
  †Aviculopecten fasciculatus
  † Avonia
  †Bandringa – type locality for genus
  †Bassleroceras
  †Bellerophon
  †Bellerophon spergensis
  †Bellinurus
  †Bembexia
  †Blattoidea
   †Brachydectes
  †Brachydectes newberryi
  †Bumastus
  †Bumastus armatus – or unidentified comparable form
  †Bumastus chicagoensis
  †Bumastus cuniculus – or unidentified comparable form
  †Bumastus graftonensis
  †Bumastus insignis
  †Bumastus springfieldensis
  †Bumastus transversalis
  †Calamites
  †Calamites suckowii
  †Callipteridium
  †Calvinia
  †Calymene
  †Calymene breviceps
  †Calymene celebra
  †Calyptaulax
  †Camarotoechia
   †Caseodus
  †Cephalerpeton – type locality for genus
  †Cephalerpeton ventriarmatum – type locality for species
  †Ceratiocaris
  †Ceratocephala
  †Ceraurinella
  †Ceraurinus
  †Ceraurus
  †Cheirurus
  †Chonetes
  †Chonetes ornatus
  †Cleiothyridina
  †Cleiothyridina atrypoides
  †Cleiothyridina sublamellosa
  †Clepsydrops – type locality for genus
  †Cliftonia
   †Coelacanthus
  †Composita
  †Composita subtilita
  †Composita trinuclea
  †Conocardium
  †Cooperoceras
  †Cordaicarpus
  †Cordaites
  †Cordaites principalis
  †Cornulites
  †Crania
  †Craniops
   †Cricotus – type locality for genus
  †Crotalocrinites
  †Ctenacanthus
  †Ctenacanthus buttersi – type locality for species
  †Curriella – tentative report
  †Cyathocrinites
  †Cyclonema
  †Cyclus
  †Cyphaspis
  †Cyrtoceras
  †Dalmanites
  †Deiphon
  †Dicoelosia
  †Dictyonema
  †Dimerocrinites
  †Dimerocrinites occidentalis
   †Diplocaulus – type locality for genus
  †Domatoceras
  †Echinaria
  †Edestus
  †Edmondia
  †Elonichthys
  †Encrinurus
  †Eodictyonella
  †Eophacops
  †Eophacops handwerki
  †Eospirifer
  †Eospirifer radiatus
  †Erratencrinurus
  †Eucalyptocrinites
  †Eucalyptocrinites crassus
  †Euomphalus
  †Euomphalus planodorsatus
   †Euphoberia – type locality for genus
  †Euphoberia armigera – type locality for species
  †Favosites
  †Fenestella
  †Fletcheria
  †Gerarus – type locality for genus
  †Glikmanius
  †Glikmanius occidentalis
  †Glyptambon
  †Glyptopleura
  †Gondolella
  †Graeophonus
  †Graeophonus scudderi – type locality for species
  †Greenops
   †Greererpeton
  †Hallopora – tentative report
  †Halysites
  †Harpidium
  †Helenodora – type locality for genus
  †Helenodora inopinata – type locality for species
  †Heliomeroides
  †Holia
  †Hyolithes
  †Ilyodes
  †Isodectes
   †Isotelus
  †Isotelus gigas
  †Isotelus maximus
  †Kionoceras
  †Latzelia – type locality for genus
  †Latzelia primordialis – type locality for species
  †Lepidodendron
  †Lepidodendron aculeatum
  †Lepidophyllum
  †Lepidostrobus
  †Lichas
  †Lingula
  †Liroceras
  Lithophaga – tentative report
   †Lysorophus – type locality for genus
  †Marsupiocrinus
  †Meristina
  †Metacoceras
  †Milosaurus – type locality for genus
  †Monograptus
  †Monograptus dubius
  †Murchisonia
  †Naticopsis
  †Naticopsis carleyana
  †Naticopsis planifrons
  †Naticopsis waterlooensis – type locality for species
  †Nemastomoides – type locality for genus
  †Neospirifer
  †Neospirifer dunbari
  †Neospirifer triplicatus
   †Neuropteris
  †Neuropteris ovata
  †Neuropteris rarinervis
  †Neuropteris scheuchzeri
  †Neuropteris tenuifolia
  †Nodonema
  Nucula
  †Nuculoidea – tentative report
  †Onychopterella – tentative report
  †Palenarthrus – type locality for genus
  †Palenarthrus impressus – type locality for species
  †Paraisobuthus
  †Pecopteris
  †Pecopteris plumo
caption: Restoration of the mysterious Carboniferous life-form Tullimonstrum, or the Tully monster
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