Trigonia thoracica
UNB-2018-0829Fossils » Eukaryote » Animalia » Mollusca » Bivalvia
Description
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Autobranchia
Order: Trigoniida
Family: Trifoniidae
Genus: Trigonia (Bruguière, 1789)
Species: Trigonia thoracica (Morton, 1834)
Two specimens with both the left and right valves preserved. One specimen is quite weathered and has no visible ribs. The other specimen has faint ribs visible near the ventral margin on the left valve. Large, rounded lunule that is infilled with sediment. Rounded ventral margin that is elongated towards the posterior end. Rounded/triangular dorsal margin.
Specifications
| Object name | Trigonia thoracica |
|---|---|
| ID | UNB-2018-0829 |
| Legal status | Permanent collection |
| Category | Fossil |
| Classification | Domain: Eukaryote Kingdom: Animalia Phylum: Mollusca Class: Bivalvia |
| Composition | Calcium carbonate |
| Age | Eon: Phanerozoic Era: Mesozoic Period: Cretaceous Epoch: Upper Cretaceous Age: Maastrichtian |
| Numeric age | 72.1 Mya |
| Origin | New Castle County, Delaware, U.S.A. |
| Pieces | 2 |
| Partial | No |
| Measurements |
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