Leiorhynchus rockymontanum
UNB-2018-0259Fossils » Eukaryote » Animalia » Brachiopoda » Rhynchonellata
Description
Kingdom: Animalia
Phylum: Brachiopoda
Class: Rhynchonellata
Order: Rhynchonellida
Family: Leiorhynchidae
Genus: Leiorhynchus (Hall, 1860)
Species: Leiorhynchus rockymontanum (Marcou, 1858)
Two specimens labelled a to b, with both the brachial and pedicle valves preserved. Specimens are slightly flattened and distorted from preservation. Brachial valve is notable smaller than pedicle valve. Large ribs (~0.3 cm) that are weathered and not visible near the posterior margin. Prominent sulcus (~1.2 cm) and faint fold composed of three ribs (~0.8 cm). Rounded/straight anterior margin and triangular posterior margin.
Specifications
| Object name | Leiorhynchus rockymontanum |
|---|---|
| ID | UNB-2018-0259 |
| 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: Pennsylvanian |
| Numeric age | 323.2 Mya |
| Origin | Ada, Oklahoma, U.S.A. |
| Pieces | 2 |
| Partial | No |
| Measurements |
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Map of Origin
Publications
- J. Marcou. 1858. Geology of North America with two reports on the Prairies of Arkansas and Texas, the Rocky Mountains of New Mexico, and the Sierra Nevada of California