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Description: | The name of this bivalve describes its triangular shape. The shell is covered with strong ribs which gave the shell extra strength. It may have lived in a high energy (rough water) environment. Trigonia burrowed in the surface of coarse sand in coastal areas including the intertidal zone (the area between high and low tide). It was a filter feeder, capturing small food particles out of the seawater. Trigonia was ery common in the Jurassic period (about 170 million years ago). Living relatives are found today but only around the coast of Australia.
Stratigraphy: Jurassic (Middle ?) / 156.5 - 178 my | Source: | Tyne & Wear Archives & Museums | Identifier: | emu.ecatalogue.palaeobiology.73932 | Go to resource |
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