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  • Reticycloceras sp.


    Images:

    oilshale

    Taxonomy

    Orthoconic Nautiloid Cephalopod

    Kingdom: Animalia
    Phylum: Mollusca
    Class: Cephalopoda
    Order: Pseudorthocerida
    Family: Spyroceratidae
    Genus: Reticycloceras
    Species: Reticycloceras sp.

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Carboniferous
    Epoch: Early
    Age: Serpukhovian

    Stratigraphy

    Big Snowy Group
    Heath Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 80mm
    Width: 20mm

    Location

    Bear Gulch
    Fergus County
    Montana
    United States

    Comments

    With soft part preservation.

     

    Lit.:

    Landman, N. H., and R. A. Davis, 1988. "Jaw and crop preserved in an orthoconic nautiloid cephalopod from the Bear Gulch Limestone (Mississippian, Montana)."

    Mapes, R. S. 1987. "Upper Paleozoic cephalopod mandibles: frequency of occurrence, modes of preservation, and paleoecological implications". Journal of Paleontology 61: 521-538.



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