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    I_gotta_rock
    • This was carved carefully from a block of matrix that fell out of the cliffs into the bay. Of the dozens that I found, this was one of the few that did not completely fall apart what it was separated from the surrounding sand. Though thicker than many shells in the same chunk of sand, they are extremely soft in this location and incredibly fragile.

      Donated to the Delaware Museum of Natural History.

    Taxonomy

    Cockle Shell

    Kingdom: Animalia
    Phylum: Mollusca
    Class: Bivalva
    Order: Cardiida
    Family: Carddidae
    Genus: Chesacardium
    Species: C. laqueatum blackwelderi
    Author Citation Ward, 1992

    Geological Time Scale

    Eon: Phanerozoic
    Era: Cenozoic
    Period: Neogene
    Epoch: Miocene

    Stratigraphy

    Choptank Formation
    Drum Cliff Member

    Provenance

    Collector: Heather Siple
    Date Collected: 07/03/2018
    Acquired by: Field Collection

    Dimensions

    Blank: 6cm
    Width: 6cm
    Height: 3cm

    Location

    Matoaka Beach
    Calvert County
    Maryland
    United States

    Comments

    This was carved carefully from a block of matrix that fell out of the cliffs into the bay. Of the dozens that I found, this was one of the few that did not completely fall apart what it was separated from the surrounding sand. Though thicker than many shells in the same chunk of sand, they are extremely soft in this location and incredibly fragile.

    Donated to the Delaware Museum of Natural History.



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