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Description: | The outside of this round single cockle shell is covered with broad ribs (ridges) separated by narrow furrows (troughs). Cerastoderma lived in a vertical position in a shallow burrow on the surface of sandy seabeds. It fed on tiny food particles that it filtered out of sea water. When the animal died the two valves usually separated. Accumulations of single shells and gravel made up of shells often occur in water depths up to 50m, including the area between high and low tide (intertidal zone), where the bivalve lived. | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | fossils natural world | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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