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    Codiacrinus schultzei FOLLMANN, 1887

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    Images:

    oilshale

    By oilshale

    Taxonomy

    Sea Lily

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Crinoidea MILLER 1821
    Order: Caythocrinida BATHER 1890
    Family: Codiacrinidae BATHER 1890
    Genus: Codiacrinus
    Species: Codiacrinus schultzei
    Author Citation FOLLMANN, 1887

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Devonian
    Sub Period: None
    Epoch: Early
    International Age: Emsian (early)

    Stratigraphy

    Hunsrück Slate Group
    Kaub Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 18 cm
    Width: 6 cm

    Location

    Eschenbach-Bocksberg Quarry
    Bundenbach
    Rhineland-Palatinate
    Germany

    Comments

    Roofing slate mining in Bundenbach (Eschenbach-Bocksberg mine) was discontinued in 1999.

    Taxonomy according to Fossilworks.
    Diagnosis in Südkamp, 2011: "The large, bowl-shaped cup is composed of three low infrabasals and two uninterrupted circlets of large, five-sided basals and radials. The angustary radial facets are horseshoe-shaped. The basals and radials have a striated surface sculpture (hexagonal concentric lines). The uniserial arms branch isotomously on primibrach three normally and heterotomously higher in the crown. The secundi- and tertibrachs have thorn-shaped plates aborally. The circular xenomorphic stem lacks a radix."

    Identified by oilshale.

    References:
    Follmann, O. (1887) Unterdevonische Crinoiden. Verhandlungen des naturhistorischen Vereins der preussischen Rheinlande, Westfalens und des Regierungs-Bezirks Osnabrück 44 (fünfte Folge: 4. Jahrgang): 113–138.
    Südkamp, Wouter. (2011) Redescription of the cyathocrinid cladid Codiacrinus schultzei Follmann, 1887 from the Lower Devonian Hunsrück Slate at Bundenbach (Germany). Paläontologische Zeitschrift. 85. 241-255. 10.1007/s12542-010-0089-2.
    Ausich, W.I., Bartels, C. & Kammer, T.W. (2013) Tube foot preservation in the Devonian crinoid Codiacrinus from the Lower Devonian Hunsrück Slate, Germany. Lethaia, Vol. 46, pp. 416–420.

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    Late Start Fossil Girl

    Late Start Fossil Girl

    Posted

    Beautiful! Was that found on slate? Or is that shale? I’m a newbie so excuse my basic questions. Also, it’s so pristine. How did you prepare it and is there anything you sealed it with? 

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    oilshale

    oilshale

    Posted (edited)

    1 hour ago, Late Start Fossil Girl said:

    Beautiful! Was that found on slate? Or is that shale? I’m a newbie so excuse my basic questions. Also, it’s so pristine. How did you prepare it and is there anything you sealed it with? 

    This rock was mined years ago as roofing slate. The fossils in it are pyritized. In former times the fossils were prepared by scraping - nowadays this is done better and more gently by sandblasting with soft iron powder.

    Pyrite can decompose with time (pyrite disease) - with fossils from Bundenbach normally no coating/ sealing is necessary. They are stable.

    Edited by oilshale

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    Kane

    Those fossil horizons are so scarce and coveted, that some people have purchased the older homes to remove and replace the slate shingle, and then sell the house! 

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