Scyphocrinites Moroccan Silurian Camerate Crinoid

Scyphocrinites sp. aff. elegans

Phylum Echinodermata, Class Crinoidea, Family Scyphocrinitidae

Geologic Time: Upper Silurian

Size: Crinoid fossil crown is 150 mm long by 132 mm wide & stem is 38 mm

Fossil Site: Djebel Issoumour, Alnif, Morocco

Scyphocrinites Moroccan Silurian Camerate Crinoid Description: Well-preserved example of a distinctive Camerate crinoid type. This large example is of the genus Scyphocrinites (Family Scyphocrinitidae). Scyphocrinites was a cosmopolitan crinoid with examples found of similar ages in the United States, Africa, Europe, and Asia. It has an intricate calyx with many stellate plates. A bulbous structure called Camarocrinus has been associated with these crinoids, and is the reason for its widespread existence in the Upper Silurian/Lower Devonian. This structure is believed to be a float, with the crinoid leading a pelagic existence, allowing it to cover much territory. They are sometimes found in mass associations. This is a fine example of this variety of Camerate crinoid to be found in the late Silurian deposits of Morocco, with much detail to the calyx, and many fine pinnules present.

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