Cyrtina hamiltonensis
UNB-2018-0396Fossils » Eukaryote » Animalia » Brachiopoda » Rhynchonellata
Description
Kingdom: Animalia
Phylum: Brachiopoda
Class: Rhynchonellata
Order: Spiriferida
Family: Cyrtinidae
Genus: Cyrtina (Davidson, 1858)
Species: Cyrtina hamiltonensis (Hall, 1857)
Two specimens with both the pedicle and brachial valves preserved. Two different sizes. Medium, coarse ribs (0.2 cm). Thin, prominent sulcus (0.3 cm) that is encrusted with sediment. Small, thin fold (0.15 cm). Large interarea. Delthyrium is visible on the small specimen (0.3 cm x 0.05 cm). Plication visible near the commissure. Rounded anterior margin and triangular posterior margin.
Specifications
| Object name | Cyrtina hamiltonensis |
|---|---|
| ID | UNB-2018-0396 |
| Legal status | Permanent collection |
| Category | Fossil |
| Classification | Domain: Eukaryote Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata |
| Composition | Calcium carbonate |
| Age | Eon: Phanerozoic Era: Paleozoic Period: Devonian Epoch: Middle Devonian Age: Givetian |
| Numeric age | 387.7 Mya |
| Origin | Erie County, New York, U.S.A. |
| Pieces | 2 |
| Partial | No |
| Measurements |
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