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  • Isselicrinus buchii


    Images:

    The Amateur Paleontologist

    Taxonomy

    Isocrinid crinoid

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Crinoidea
    Order: Isocrinida
    Family: Isselicrinidae
    Genus: Isselicrinus
    Species: I. buchii
    Author Citation Roemer (1840)

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Epoch: Late
    International Age: Lower Maastrichtian

    Stratigraphy

    Møns Klint Formation
    Hvidskud member

    Provenance

    Collector: Christian Voiculescu-Holvad
    Date Collected: 08/14/2016
    Acquired by: Field Collection

    Dimensions

    Length: 67 mm
    Diameter: 4 mm

    Location

    Freuchens Pynt, Møns Klint
    Møn
    Zealand
    Denmark

    Comments

    Isselicrinus buchii is a relatively common crinoid in Maastrichtian Danish chalk strata in the form of small 2-3 segment-long columnal fragments. However, starting from 10 segments, an articulated I. buchii columnal is fairly rare, and above 30 segments is substantially rare. On this specimen, there are in total 40 segments and 1 partial segment.

    It was recovered from a large chalk nodule, which had to be broken several times to access the whole stem. The fossil has been entirely 3D prepared, by the use of small dental tools.

    It is thought that the black colour at the base of the columnal represents a remnant of the attachment disc/holdfast

     

     

    Edited by The Amateur Paleontologist

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