Astartella concentrica
UNB-2018-0690Fossils » Eukaryote » Animalia » Mollusca » Bivalvia
Description
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Autobranchia
Order: Carditida
Family: Astartidae
Genus: Astartella (Hall, 1858)
Species: Astartella concentrica (Conrad, 1842)
Three specimens; One specimen has both the right and left valves preserved, and the other two specimens are of the individual left and right valves. Prominent growth lines. Rounded umbo. Faint posterior ridge. Lunule is visible on the specimen with both valves preserved. Rounded/straight ventral margin and rounded/triangular dorsal margin. Heterodont dentition.
Specifications
| Object name | Astartella concentrica |
|---|---|
| ID | UNB-2018-0690 |
| Legal status | Permanent collection |
| Category | Fossil |
| Classification | Domain: Eukaryote Kingdom: Animalia Phylum: Mollusca Class: Bivalvia |
| Composition | Calcium carbonate |
| Age | Eon: Phanerozoic Era: Paleozoic Period: Carboniferous Subperiod: Pennsylvanian |
| Numeric age | 323.2 Mya |
| Origin | Jack County, Texas, U.S.A. |
| Pieces | 3 |
| Partial | No |
| Measurements |
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Map of Origin
Publications
- T. A. Conrad. 1842. Observations on the Silurian and Devonian systems of the United States, with descriptions of new organic remains. Journal of the Academy of Natural Sciences of Philadelphia 8(2):228-280
- J. Hall. 1858. Palaeontology of Iowa. Report of the Geological Survey of the state of Iowa 1(2):473-724