Trigonia
Trigonia is an extinct genus of saltwater clams, fossil marine bivalve mollusk in the family Trigoniidae. The fossil range of the genus spans the Paleozoic, Mesozoic and Paleocene of the Cenozoic, from 298 to 56 Ma.
| Trigonia | |
|---|---|
| A fossil shell of T. interlaevigata from Germany, of Jurassic age | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Trigoniida |
| Family: | Trigoniidae |
| Subfamily: | Trigoniinae |
| Genus: | †Trigonia Bruguière, 1789 |
| Species | |
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See text | |
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