Composita trinuclea
UNB-2018-0110Fossils » Eukaryote » Animalia » Brachiopoda » Rhynchonellata
Description
Kingdom: Animalia
Phylum: Brachiopoda
Class: Rhynchonellata
Order: Athyridida
Family: Athyrididae
Genus: Composita (Brown, 1849)
Species: Composita trinuclea (Hall, 1856)
Small specimen with both the brachial and pedicle valves preserved. Large ribs that are slightly weathered. Small, thin prominent sulcus and fold. Prominent growth lines near the anterior margin. Rounded anterior margin and rounded/triangular posterior margin. Plication near the commissure.
Specifications
| Object name | Composita trinuclea |
|---|---|
| ID | UNB-2018-0110 |
| Legal status | Permanent collection |
| Category | Fossil |
| Classification | Domain: Eukaryote Kingdom: Animalia Phylum: Brachiopoda Class: Rhynchonellata |
| Composition | Calcium carbonate |
| Age | Eon: Phanerozoic Era: Paleozoic Period: Carboniferous Subperiod: Mississipian Epoch: Middle Mississipian to Upper Mississipian Age: Visean to Serpukhovian |
| Numeric age | 346.7 - 330.9 Mya |
| Origin | Pella, Iowa, U.S.A. |
| Pieces | 1 |
| Partial | No |
| Measurements |
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Map of Origin
Publications
- J. Hall. 1856. Description of new species of fossils from the Carboniferous limestones of Indiana and Illinois. Transactions of the Albany Institute 4:1-36