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  • Psammechinus carolinensis


    sixgill pete



    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


    River Bend Formation


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


    Thickness: 2.9mm
    Diameter: 6.1mm


    Martin Marietta Quarry
    Jones County
    North Carolina
    United States


    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.



    Smithsonian Contributions To Paleobiology : Number 83


    Oligocene Echinoids of North Carolina

    Porter M Kier



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