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  • Echinocyamus parvus


    Images:

    sixgill pete

    Taxonomy

    E. parvus a.k.a. "Rice Krispie"

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Echinoidea
    Order: Clypeasteroida
    Family: Fibulariidae
    Genus: Echinocyamus
    Species: Echinocyamus parvus
    Author Citation Emmons, 1858

    Geological Time Scale

    Eon: Phanerozoic
    Era: Cenozoic
    Period: Paleogene
    Sub Period: None
    Epoch: Eocene

    Stratigraphy

    Castle Hayne Formation

    Provenance

    Collector: Don Rideout
    Date Collected: 10/21/2011
    Acquired by: Field Collection

    Dimensions

    Length: 6.21 mm
    Width: 4.31 mm

    Location

    Limestone Quarry
    Onslow County
    North Carolina
    United States

    Comments

    This tiny echinoid: 6.21 mm by 4.31 mm is extremely large for the species. Most range between 2 and 4 millimeters. The measurements were taken while taking pictures with my digital microscope. They are an uncommon find by most collectors. Seeing them in situ is extremely difficult unless the sediments have been very well weathered. Most I have found are from matrix I collected. The last picture of the 2 is meant to show the size range of these. The smaller one measures 2.68 mm long by 1.74 mm wide; and I have a few even smaller.

     

    Reference:

    Kier, P.M. (1980) The Echinoids of the Middle Eocene Warley Hill Formation, Santee Limestone and Castle Hayne Limestone of North and South Carolina. Smithsonian Contributions to Paleobiology : Number 39. pg. 34, plate 10 figures 5-10




    User Feedback


    have heard them called "Rice" echinoids. Some fossils are really tough to assign common names to.

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    sixgill pete

    Posted

    Rice Krispies. And at Belgrade we have Rice Krispies ( same genus, different species) and Cheerios.

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