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Description: | The test (skeleton) of this sea urchin is covered with regular rows of tubercles (round projections) and pores. In life, the tubercles would have had protective spines attached to protect the animal from predators, and the pores would have been filled by tube feet that the sea urchin used to move around. Physoma lived in an open sea environment where the salinity (salt content) of the sea water was normal. It was probably a scavenger that fed mainly on bivalve remains. | 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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