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  • Psammechinus carolinensis


    Images:

    sixgill pete

    Taxonomy

    "Cheerios"

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Echinoidea
    Order: Echinoida
    Family: Echinoidae
    Genus: Psammechinus
    Species: P. carolinensis
    Author Citation Kier, 1997

    Geological Time Scale

    Eon: Phanerozoic
    Era: Cenozoic
    Period: Neogene
    Epoch: Oligocene
    Age: Rupelian

    Stratigraphy

    River Bend Formation

    Provenance

    Collector: Don Rideout
    Date Collected: 11/09/2014
    Acquired by: Field Collection

    Dimensions

    Thickness: 2.9mm
    Diameter: 6.1mm

    Location

    Martin Marietta Quarry
    Jones County
    North Carolina
    United States

    Comments

    These little echinoids, referred to locally sometimes as "cheerios" because they average about the same size as one. They are a relatively common find in the basal sands of the early Oligocene River Bend Formation, often in association with Rebecapecten trentensis. This specimen is one of my smaller ones; 6.1 mm in diameter and is cleaner than most. Many of these have a calcite coating with black and white sand granules on them. In the last photo; the group shot, it is the one on the upper left. The smallest in the case.

     

    Literature:

    Smithsonian Contributions To Paleobiology : Number 83

     

    Oligocene Echinoids of North Carolina

    Porter M Kier

    1997

     



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