Biology:Parapuzosia bradyi

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Short description: Extinct species of ammonite

Parapuzosia bradyi
Temporal range: Late Cretaceous
Parapuzosia bradyi (fossil ammonite) (Cody Shale, Upper Cretaceous; Wyoming, USA).jpg
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Desmoceratidae
Genus: Parapuzosia
Species:
P. bradyi
Binomial name
Parapuzosia bradyi
Miller & Youngquist, 1946

Parapuzosia bradyi is a gigantic species of ammonite, reaching diameters of more than 4.5 ft (1.4 m) by 6 ft (1.8 m). It is the largest species of ammonite in North America. It had a moderately involute shell with flat sides. The inner whorls are slightly oval-shaped with prominent ribbing. They are only known from the upper layers of the Eagle Sandstone and Cody Shale formations (both Late Cretaceous).[1]

References

  1. Neal L. Larson; Steven D. Jorgensen; Robert A. Farrar; Peter L. Larson (1997). Ammonites and the Other Cephalopods of the Pierre Seaway. Geoscience Press, Inc. p. 44. ISBN 0-945005-34-2. 

Wikidata ☰ Q7135786 entry