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  • Eocomatula interbrachiatus


    Images:

    TqB
    • An unusually complete specimen although crowns are well known from this location.

      It is an early comatulid (feather star) and has a very short stem consisting of only six or seven columnals, all of which bear cirri.

       

      Reference: Simms, M.J. 1989. British Lower Jurassic Crinoids. Monograph of the Palaeontographical Society, London:1-103, pls.1-15 (No. 581)

       

      This was Invertebrate/Plant Fossil of the Month March 2015

    Taxonomy

    Feather star, free swimming crinoid

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Crinoidea
    Order: Isocrinida
    Family: Pentacrinitidae
    Genus: Eocomatula
    Species: E. interbrachiatus
    Author Citation (Blake, 1876)

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Jurassic
    Epoch: Early
    International Age: Lower Pliensbachian (top)

    Stratigraphy

    Lias
    Staithes Sandstone Formation

    Biostratigraphy

    Davoei Zone
    Figulinum Subzone?

    Provenance

    Collector: self
    Date Collected: 04/02/2013
    Acquired by: Field Collection

    Dimensions

    Blank: 25cm

    Location

    North Yorkshire Coast
    North Yorkshire
    North East
    England

    Comments

    An unusually complete specimen although crowns are well known from this location.

    It is an early comatulid (feather star) and has a very short stem consisting of only six or seven columnals, all of which bear cirri.

     

    Reference: Simms, M.J. 1989. British Lower Jurassic Crinoids. Monograph of the Palaeontographical Society, London:1-103, pls.1-15 (No. 581)

     

    This was Invertebrate/Plant Fossil of the Month March 2015



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