| P number: | P521121 |
|---|---|
| Caption: | A fossil specimen of Onychocrinus liddelensis Wright. A fossil crinoid. (Echinodermata, Crinoidea.) Penton Linns, Liddel Water, 0.25 miles below bridge, Penton Station, Dumfriesshire, Scotland. |
| Description: | A member of the Phyllum Echinodermata, Class Crinoidea (Sea-lillies). They are a stalked, sessile-benthic echinoderm. British Geological Survey Biostratigraphy Collection number GSE 8359. Paratype. Highly differentiated they consist of a segmented stem (columna), with a globose cup-like structure, the calyx, which contains the main body of the animal. An array of branching arms called brachials isarranged around the calyx. Crinoida have no sense organs but have numerous tactile sense cells and are sensitive to touch. They feed on microorganisms such as diatoms. Crinoids are an ancient fossil group that first appeared in the seas of the Cambrian. They flourished in the Cambrian and Mesozoic and some can still be found today. Fossil crinoids indicate that the rocks containing their remains were formed in a shallow-water marine environment. This specimen is from the Carboniferous Limestone Series. J. Wright. Mon. Pal. Soc. Vol. CVII, 1954, pl. XLIV, fig. 2. |
| Date taken: | Wed Jan 01 00:00:00 GMT 2003 |
| Photographer: | Unknown |
| Copyright statement: | NERC |
| Orientation: | Landscape |
| Size: | 163.43 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Best of BGS Images/ Fossils |
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