Museum Bundenbach Triacrinus Crinoid

Triacrinus sp

Phylum Echinodermata, Phylum Echinodermata, Subphylum Crinozoa, Class Crinoidea, Subclass Disparida (Order Uncertain)

Geological Time: Lower Devonian, Seigenian/Emsian Stage

Size (25.4 mm = 1 inch): Crinoid calyx is 48 mm tall by 25 mm wide, with 100 mm stem on a 210 by 100 mm matrix

Fossil Site: Hunsrück Slate, Bundenbach, Germany

Fossil Code: GF043

Price: Sold


Bundenbach Triacrinus Crinoid FossilDescription: Well-preserved example of the Disparid crinoid known as Triacrinus. The Hunsruck slate is famous for its fossils, many of which have pyritization present. Rapid burial and pyritization was what led to the many wonderful examples of early Devonian life from the region. The chemistry of the silt was such that low organic content and high levels of iron and sulfur allowed the pyrite to diffuse into the tissues rather than be deposited in the sediment. The mudstones were metamorphosed into slate during the Carboniferous. The slate was quarried for roofing tiles, and the quarrymen would save the fossils for later sale. Now that the quarries are no longer open, future supplies of these wonderfully-preserved benthic organisms will only come from existing collections. Few examples of this quality are ever seen; it is the only such piece I have been able to secure in several years.

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