page_title: List of the Mesozoic life of Arizona
section_title: G
hierarchical_section_title: List of the Mesozoic life of Arizona / G
caption_attribution_description: English: Gryphaea sp. from the Cretaceous of Texas; left valve interior and exterior (same specimen).
context_page_description: This list of the Mesozoic life of Arizona contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arizona and are between 252.17 and 66 million years of age.
context_section_description: †Gemmarcula
  †Gemmarcula arizonensis – type locality for species
  †Gemmarcula menardi
   †Gervillia
  †Gervillia cholla
  †Gervillia heinemani
  †Gervillia navajovus – type locality for species
  †Gervillia rasori
  Ginkgo
  †Grallator
  †Grallator cursorius
  †Granocardium
  †Granocardium trite
  †Graphidula
  †Graphidula walcotti
  †Gregania – tentative report
   †Gryphaea
  †Gryphaeostrea
  †Gryphaeostrea elderi – type locality for species
  †Gryphaeostrea nationsi – type locality for species
  Gyrodes
  †Gyrodes conradi
  †Gyrodes depressa
  †Gyrodes tramitensis – or unidentified comparable form
  †Gyrolepis
  †Gyrotropis
  †Gyrotropis nationsi – type locality for species
caption: Interior and exterior of a fossilized shell of the Late Triassic-Eocene marine bivalve Gryphaea
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