• Source: Aspidoceratidae
  • The Aspidoceratidae comprise a family of middle and upper Jurassic ammonites that make up part of the superfamily Perisphinctoidea, characterized by evolute shells, commonly stocky, that tend to develop tubercles.
    The Aspidoceratidae are thought to be derived from the Perisphinctidae and have been subdivided into three subfamilies, the Aspidoceratinae, Peltoceratinae, and Simoceratinae.


    Subfamilies and genera



    Aspidoceratinae Zittel 1895
    Aspidoceras
    Chinamecaceras Cantu-Chapa 2006
    Epaspidoceras
    Euaspidoceras
    Orthaspidoceras
    Peltoceratinae Spath 1924
    Peltoceras
    Peltoceratoides
    Rursiceras
    Simoceratinae
    Simoceras
    Virgatosimoceras


    References



    Arkell, et al., Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L (Ammonoidea). Geol Soc of America and Univ Kansas Press.

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