The cladid crinoid Gissocrinus Angelin from Wenlock Edge, Shropshire (Silurian)

Autor:	D. N. Lewis, C. J. Veltkamp, Stephen K. Donovan
Rok vydání:	2008
Předmět:	Paleontology biology West midlands Quadrate bone Geology Crinoid biology.organism_classification
Zdroj:	Proceedings of the Yorkshire Geological Society. 57:69-74
ISSN:	2041-4811 0044-0604
Popis:	Summary Complete fossil crinoids are well known from the Much Wenlock Limestone Formation (Silurian, Wenlock, Homerian), but are only common in the Dudley area of the West Midlands. Elsewhere, Wenlock crinoids are preserved as disarticulated ossicles. For example, only about six nominal crinoids are known from the type area of the Much Wenlock Limestone Formation on Wenlock Edge. Herein, we document abundant remains of the cladid crinoid Gissocrinus spp. from near Much Wenlock, Shropshire, based on common brachial and rare radial ossicles. Brachials are mainly thin and quadrate with a U-shaped adoral groove. There are six nominal species of Gissorcrinus in the Wenlock of the British Isles; probability suggests that this sample contains elements of more than one species.
Databáze:	OpenAIRE
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