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Description: | The test (skeleton) of this sea urchin has been replaced by (changed to) flint (silica). The smooth shape shows that the sea urchin burrowed in soft seabed sediments. When it was alive, the test was covered with skin and short bristle like spines that helped Echinochorys burrow. It lived in an open sea environment where the salinity (salt content) of the sea water was normal. Echinochorys fed on food particles that it found in sediment it ate. Its mouth is on the flattened lower surface. | 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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