Arcestes (Proarcestes) shastensis
UNB-2018-0869Fossils » Eukaryote » Animalia » Mollusca » Cephalopoda » Ammonoidea
Description
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ceratitida
Family: Arcestidae
Genus: Arcestes (Mojsisovic, 1893)
Subgenus: Arcestes (Proarcestes) (Mojsisovic, 1893)
Species: Arcestes (Proarcestes) shastensis (Smith, 1927)
Sphaerocone specimen. Slight encrusted with sediment. Rounded, wide aperture that is infilled with sediment. Faint ceratitic sutures visible near the aperture.
Specifications
| Object name | Arcestes (Proarcestes) shastensis |
|---|---|
| ID | UNB-2018-0869 |
| Legal status | Permanent collection |
| Category | Fossil |
| Classification | Domain: Eukaryote Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Ammonoidea |
| Composition | Calcium carbonate |
| Age | Eon: Phanerozoic Era: Mesozoic Period: Triassic Epoch: Middle Triassic Age: Anisian |
| Numeric age | 247.2 Mya |
| Origin | Humbolt, Nevada, U.S.A. |
| Pieces | 1 |
| Partial | No |
| Measurements |
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Map of Origin
Publications
- J. P. Smith. 1927. Upper Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 141:1-262