page_title: List of the Mesozoic life of Montana
section_title: G
hierarchical_section_title: List of the Mesozoic life of Montana / G
caption_attribution_description: Skeleton of Gobiconodon ostromi, a fossil triconodont
context_page_description: This list of the Mesozoic life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana and are between 252.17 and 66 million years of age.
context_section_description: †Gastopoda
  †Gervillia
  †Gervillia ussurica – or unidentified comparable form
  †Gilmoremys
  †Gilmoremys lancensis
   Ginkgo
  †Ginkgo pluripartita
  †Ginkgoites
  †Ginkgoites cascadensis
  †Ginkgoites pluripartita
  †Glasbius
  †Glasbius twitchelli – type locality for species
  †Glishades – type locality for genus
  †Glishades ericksoni – type locality for species
  †Glyptops
  †Glyptops pervicax – type locality for species
  Glyptostrobus – or unidentified comparable form
   †Gobiconodon – type locality for genus
  †Gobiconodon ostromi – type locality for species
  †Goniobasis
  †Goniobasis subtortuosa
  †Gorgosaurus
  †Gorgosaurus libratus – type locality for species
  †Grammatodon
  †Grewipollenites
  †Grewipollenites radiatus
   †Gryphaea
  †Gryphaea – type locality for species – informal
  †Gryphaea impressimarginata
  †Gryposaurus
  †Gryposaurus latidens – type locality for species
  †Gryposaurus notabilis
  †Gypsonictops
  †Gypsonictops hypoconus
  †Gypsonictops illuminatus
  †Gypsonictops lewisi – type locality for species
  Gyrodes
  †Gyrodes conradi
caption: Mounted fossilized skeleton of the Middle Jurassic-Late Cretaceous mammal Gobiconodon
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