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Description: | This is the cast of the inside of a gastropod shell. The original cast was later replaced by phosphate minerals which form in shallow, warm seas when there is little or no sediment (sand and mud) being deposited. The cast shows that the inside of the gastropod shell was smooth. Pleurotomaria grazed on algae that grew on the sea floor. | 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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