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  • Kosmoceras jason (Reinecke 1847)


    Images:

    Ludwigia

    Taxonomy

    Ammonite

    Kingdom: Animalia
    Phylum: Mollusca
    Class: Cephalopoda
    Order: Ammonitida
    Family: Kosmoceratidae
    Genus: Kosmoceras
    Species: Kosmoceras jason
    Author Citation Reinecke 1847

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Jurassic
    Sub Period: None
    Epoch: Middle
    International Age: Middle Callovian

    Stratigraphy

    Lower Oxford Clay Formation

    Biostratigraphy

    Jason zone
    Jason subzone

    Provenance

    Collector: D. Bundock
    Date Collected: 05/09/2014
    Acquired by: Purchase/Trade

    Dimensions

    Diameter: 5 cm

    Location

    Colm quarry
    Gloucestershire
    United Kingdom

    Comments

    The European index fossil for both the jason zone and subzone. The white is original shell substance. One can also see in the second photo how the phragmocone has been converted to calcite.

     

     




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