Pyrite – Death Bed Fossil of Early Jurassic Pentacrinte Crinoids


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This pyrite (pyritized) fossil is from Charmouth Beach, Charmouth, West Dorset, Dorset,  England, United Kingdom. Animal fossils from the Jurassic Period wash out of the cliffs and can be found mixed in the gravels of the beach. Several types of minerals contributed to the fossilization of these animals including pyrite and calcite. In this case both calcite and pyrite created this fossil. It is a “death bed” type fossil made up of the remains of a Pentacrintes which is an extinct genus of crinoid (sea fan) that dates to about 196 million years in age. The interior of the fossil has been replaced by calcite while the exterior parts have been replaced with thin layers of pyrite.The well defined pentacrintes was found in situ in a fossil rich shale. It was then cleaned, stabilized and coated in a protective lacquer. The pyrite has a bronze to dull gold color depending how it is oriented to the light source. It measures 2 9/16 x 2 3/16 x 1/2 inches or 65 x 55 x 12 mm.

Additional information

Weight9 oz

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