Lot 327
Crinoid and Ammonites. The 180 million year old Posidonia Shale of Holzmaden is famous for the exceptional preservation of fossil sea creatures. The black slate is a perfect matrix for the golden brown fossils that are occasionally encountered. This large 26.5 x 20 inch black slate matrix contains a beautiful large 19 inch Crinoid, Seirocrinus subangaris which consists of a 5 inch diameter Calyx (flower) and a 12 inch long curving stem. Crinoids, known as sea lilies, look like a plant but are actually animals related to starfish and have a five fold symmetry. They open their arms and filter feed small animals and detritus. Also on the matrix are 11 golden brown ammonites, Dactylioceras commune, ranging in size up to 3 inches in diameter. The large crinoids are quite rare and in tremendous demand both with collectors and decorators. A barely noticeable break in the black slate has been professionally repaired and backed with wood for stability. Large crinoid plates such as this one have sold for more than $10,000 at auction.
Add $60 for domestic shipping.
Estimated Value $2,000 - 3,000.
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