Orthosphinctes

Orthosphinctes is a genus of ammonites belonging to the order Ammonitida family Ataxioceratidae.

Orthosphinctes
Temporal range:
Orthosphinctes sp., from Montejunto (Portugal), at the Museu Nacional de História Natural, Lisboa
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Family: †Ataxioceratidae
Genus: †Orthosphinctes
Schindewolf, 1925
Species[2]
  • Orthosphinctes alternans

They lived in the late Jurassic period, in the Kimmeridgian age, which occurred 155.7-152.1 million years ago. These shelled ammonoids were nektonic, fast-moving and carnivore.

Fossils distribution

Jurassic of Algeria, France, India, Iran, Italy, Madagascar, Spain, Yemen.[2]

References
  1. Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Archived from the original on 2016-02-25. Retrieved 2014-05-28.
  2. "Paleobiology Database - Pectinatites". Retrieved 17 December 2021.


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