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Description: | There are many different kinds of brachiopod (lamp shell) fossils in this siltstone. This suggests that many brachiopods lived and died over a period of time and their shells formed an important part of the sediment deposited on the seabed. The largest fan-shaped shell (towards the left side of the rock) is called Harknesella. At some time after the brachiopods had become fossilised, their shells were dissolved away so that their impressions (moulds) are all that remain in the rock. | 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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