Biology:Orthaspidoceras
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Short description: Genus of molluscs (fossil)
| Orthaspidoceras | |
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| Fossil shell of Orthaspidoceras schilleri, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
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| Kingdom: | Animalia
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| Genus: | Orthaspidoceras Spath 1925
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| Species [1] | |
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Orthaspidoceras is an extinct ammonoid cephalopod genus belonging to the family Aspidoceratidae. These nektonic carnivores lived during the Jurassic period, Kimmeridgian age.[2]
Description
Shells of Orthaspidoceras are medium or large-sized, with a diameter reaching about 20–25 centimetres (7.9–9.8 in). These shells are relatively involute and thick, with a quadrate-rounded or depressed whorls. The ornamentation consists of a row of coarse tubercles and fine streaks.[1]
Distribution
Jurassic deposites of Italy, Mexico, Switzerland and Yemen [3]
References
- ↑ 1.0 1.1 Jean-ours.filippi
- ↑ Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda
- ↑ Paleobiology Database – Orthaspidoceras. 2014-05-29.
- Arkell, et al.,1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L (Ammonoidea). Geol Soc of America and Univ Kansas Press. p. L338-339.
External links
Wikidata ☰ Q18358326 entry
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