List of the prehistoric life of Connecticut

The Paleobiology Database records no known occurrences of Precambrian or Paleozoic fossils in Connecticut.

• † Acanthichnus
  • † Acanthichnus cursorius
• † Anchisauripus
  • † Anchisauripus exsertus
  • † Anchisauripus giganteus – type locality for species
  • † Anchisauripus hitchcocki
  • † Anchisauripus parallelus
  • † Anchisauripus sillimani
  • † Anchisauripus tuberosus
• 

  Restoration of the Early Jurassic sauropodomorph dinosaur Anchisaurus
  † Anchisaurus
  • † Anchisaurus polyzelus – type locality for species
• † Ancyropus – type locality for genus
  • † Ancyropus heteroclitus – type locality for species
• † Anomoepus
  • † Anomoepus curvatus
  • † Anomoepus gracillimus
  • † Anomoepus intermedius
• † Argoides
  • † Argoides macrodactylus – type locality for species
  • † Argoides minimus – type locality for species
• † Baiera
• † Batrachopus
  • † Batrachopus barrattii
  • † Batrachopus deweyi
  • † Batrachopus dispar
  • † Batrachopus gracilis
• † Belodon
  • † Belodon validus – type locality for species
• † Bisulcus
• Botryopera
• † Brontozoum
  • † Brontozoum divaricatum
  • † Brontozoum giganteum
  • † Brontozoum isodactylum
  • † Brontozoum sillimanium
• † Cochlichnus
• † Coelophysis
• † Conopsoides
  • † Conopsoides larvalis
• † Corvipes
  • † Corvipes lacertoideus
• † Cunichoides
  • † Cunichoides marsupialoideus – type locality for species
• † Cunicularius
  • † Cunicularius retrahens
• † Erpetosuchus
• 

  Fossil Eubrontes tracks. Eubrontes is the Connecticut state fossil.
  † Eubrontes
  • † Eubrontes approximatus
  • † Eubrontes dananus – type locality for species
  • † Eubrontes divaricatus
  • † Eubrontes giganteus
• † Gigandipus
  • † Gigandipus caudatus
• † Grallator
  • † Grallator cuneatus
  • † Grallator cursorius
  • † Grallator formosus
  • † Grallator magnificus
  • † Grallator tenuis
• † Harpedactylus
  • † Harpedactylus tenuissimus – type locality for species
• † Herpystezoum
  • † Herpystezoum minutus
• † Holcoptera
  • † Holcoptera giebeli
• † Hoplichnus
  • † Hoplichnus equus
• 

  Life restoration of Hypsognathus.
  † Hypsognathus
  • † Hypsognathus fenneri
• † Isocampe
  • † Isocampe strata
• † Loperia
• † Mormolucoides
  • † Mormolucoides articulatus
• † Ornithoidichnites
  • † Ornithoidichnites gracillior – type locality for species
  • † Ornithoidichnites sillimani – type locality for species
• 

  Fossil from Dinosaur State Park and Arboretum of the Late Triassic-Middle Jurassic sauropodomorph dinosaur footprint ichnogenus Otozoum
  † Otozoum
  • † Otozoum moodii
• † Palamopus
  • † Palamopus divaricans
• † Platypterna
  • † Platypterna deanii – type locality for species
  • † Platypterna delicatula – type locality for species
  • † Platypterna tenuis – type locality for species
• † Plectropterna
  • † Plectropterna gracilis
  • † Plectropterna lineans
  • † Plectropterna minitans
• † Plectropus
  • † Plectropus longipes
• † Plesiornis
• † Redfieldius
  • † Redfieldius gracilis
• 

  Fossilized skeleton of the Late Triassic-Early Jurassic bony fish Semionotus
  † Semionotus
  • † Semionotus agassizi
  • † Semionotus tenuiceps
• † Sillimanius
  • † Sillimanius gracilior – type locality for species
  • † Sillimanius tetradactylus – type locality for species
• † Stegomus – type locality for genus
  • † Stegomus arcuatus – type locality for species
• † Steropoides
  • † Steropoides divaricatus
  • † Steropoides diversus
  • † Steropoides infelix
  • † Steropoides loripes
• † Tarsoplectrus
  • † Tarsoplectrus elegans – type locality for species
• † Triaenopus
  • † Triaenopus baileyanus – type locality for species
  • † Triaenopus lulli – type locality for species
• † Trihamus
  • † Trihamus elegans
  • † Trihamus magnus
• † Typopus
  • † Typopus gracilis – type locality for species

The Paleobiology Database records no known occurrences of Cenozoic fossils in Connecticut.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.