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Uploaded on:
11/03/2009 02:39:25
Type:
Digital Asset
File Size:
113.16 KB
Dimensions:
761 x 1000 pixels
117 views 4 downloads
P number: P521026
Caption: A fossil specimen of Rhynchonella cf. amalthei Quenstedt. A fossil brachiopod. (Brachiopoda.) Raasay, Invernessshire, Scotland.
Description: A member of the Rhynchonellida Order of brachiopods which have strongly convex shells with no apparent hinge line on the posterior margin. They generally lack the internal platforms of the Pentamerides and almost always have strong radial ridges externally. British Geological Survey Biostratigraphy Collection number GSE 2565. Rhynchonellid brachiopods flourished particularly well in clear- water, firm-substrate communities and often formed 'nests' comprising hundreds of individuals. Brachiopods have been around for at least 550 million years and because they are robust, relatively abundant and display considerable morphological diversity they have been the subject of a wide range of studies in evolution, palaeoecology, palaeobiogeography and stratigraphy. This specimen is from the Middle Lias (Domerian) of the Jurassic of Raasay.
Date taken: 01/01/2003
Photographer: Unknown
Copyright statement: NERC
Orientation: Portrait
Size: 113.16 KB; 761 x 1000 pixels; 64 x 85 mm (print at 300 DPI); 201 x 265 mm (screen at 96 DPI);
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