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  • Hoploscaphites Spedeni


    Images:

    davidcpowers
    • Originally the specimen was collected as a concretion from upper Pierre Shale Formation near the lowest level of the Fox Hills Formation. The collection location is Cedar Creek about seven miles south of Glendive, Montana. The Date collected was Oct. 12, 2018. Later, I removed most of the concretion/matrix with diamond blade and bits. Two of the hoploscaphites spedeni were badly crushed and fractured during fossilization and are missing half of shells. During prep, I miscalculated the depth of cutting blade, slightly damaging the middle scaphites. 

    Taxonomy

    Kingdom: Animalia
    Phylum: Mollusca
    Class: Cephalopoda
    Order: Ammonitida
    Family: Scaphitidae
    Genus: Hoploscaphites
    Species: Hoploscaphites spedeni

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Epoch: Late

    Stratigraphy

    Pierre Formation

    Provenance

    Collector: David C Powers
    Date Collected: 10/12/2018
    Acquired by: Field Collection

    Dimensions

    Blank: 7cm
    Width: 5cm
    Height: 10cm

    Location

    Cedar Creek, 7 miles south of Glendive
    Dawson County
    Montana
    United States

    Comments

    Originally the specimen was collected as a concretion from upper Pierre Shale Formation near the lowest level of the Fox Hills Formation. The collection location is Cedar Creek about seven miles south of Glendive, Montana. The Date collected was Oct. 12, 2018. Later, I removed most of the concretion/matrix with diamond blade and bits. Two of the hoploscaphites spedeni were badly crushed and fractured during fossilization and are missing half of shells. During prep, I miscalculated the depth of cutting blade, slightly damaging the middle scaphites. 



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