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  • Orophocrinus saltensis


    Images:

    DPS Ammonite

    Taxonomy

    Blastoid

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Blastoidea
    Order: Fissiculata
    Family: Orophocrinidae
    Genus: Orophocrinus
    Species: Orophocrinus saltensis
    Author Citation Macurda 1975

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Carboniferous
    Sub Period: Mississippian
    Epoch: None

    Stratigraphy

    Escabrosa Limestone

    Provenance

    Collector: Me
    Date Collected: 11/16/2019
    Acquired by: Purchase/Trade

    Dimensions

    Width: 31 mm

    Location

    Superior
    Pinal County
    Arizona
    United States

    Comments

    This silicified blastoid at 31 mm in width is close to maximum size for the species. Found with at least three species of crinoids in Mississippian Escabrosa Limestone which is roughly equivalent to the Redwall Limestone of central and northern Arizona.
     

    Macurda D. B., Jr. 1965. The functional morphology and stratigraphic distribution of the Mississippian blastoid genus Orophocrinus. Journal of Paleontology 39(6):1045-1096.

     

    McKee, Edwin D., Gutschick, R. C., 1969. History of the Redwall Limestone of northern Arizona. Geological Society of America Memoirs 114, 1-700.
     

    Mindat: Link

    Fossil Forum: Link



    User Feedback


    Excellent example of an uncommon species! :wub: :wub:

     

    Don

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