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Description: | An unknown spieces of crinoid calyx with arms measuring (12mm x 11mm x 2mm) pale grey/brown in colour. The fossil is within a pale brown micrite slab (35mm x 23mm x 16mm). The specimen is the base of the calyx with atleast five arms extruding from the central stem attachment. There are brachiopod fragments within the martix, for example Atrypa sp. On the matrix slab is the number 1A in black ink. This indicates that this specimen was collected from Steven Birchs locality 1A (GR SO 9370 9220). This specimen is from the Much Wenlock Limestone Formation, Nodular Member. This is Silurian, dating at c425my and was collected from the Wrens Nest, Dudley, West Midlands. CB
A base of an unidentified crinoid calyx with arms from the Wrens Nest, Dudley around 425 million years old | License: | http://creativecommons.org/licenses/by/2.0/uk/ | Publisher: | Dudley Museums Service | Rights holder: | Dudley Museums Service | Subjects: | Steven Birch Collection Geology | Temporal: | Silurian - Wenlock | Source: | Black Country History | Identifier: | http://www.blackcountryhistory.org/colle... | Go to resource |
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