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Pachyceras

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Genus of molluscs (fossil)

Pachyceras
Temporal range: Callovian–Oxfordian PreꞒ O S D C P T J K Pg N
Fossil of Pachyceras lalandeanum from Calvados (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Pachyceratidae
Genus: Pachyceras
Bayle, 1878
Species
  • Pachyceras schloenbachi Roman, 1930

Pachyceras is a genus of perisphinctoid ammonites from the Middle Jurassic, upper Callovian stage, and is the type genus for the family Pachyceratidae. The shell is involute, subglobular, with a deep umbilicus and flattened flanks that slope toward a more narrowly rounded venter, and covered by low, widely spaced ribs.

Distribution

Jurassic deposits of Egypt, France, India, Saudi Arabia and Switzerland.

References

  1. Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Archived from the original on 2016-02-25. Retrieved 2017-10-18.
  2. ^ Paleobiology Database - Pachyceras. 2017-10-18.
  • D. T. Donovan, J. H. Callomon and M. K. Howarth 1981. Classification of the Jurassic Ammonitina; The Ammonoidea. The Systematics Association special volume no. 18
Taxon identifiers
Pachyceras


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