Orthosphinctes

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

Orthosphinctes Temporal range: Kimmeridgian[1] PreꞒ Ꞓ O S D C P T J K Pg N
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, Germany, India, Iran, Italy, Madagascar, Spain, Yemen.^[2]

Gallery

• 
  Orthosphinctes colubrinus, from Mount Lochen near Balingen, Germany
• 
  Orthosphinctes pseudoachilles, from Treuchtlingen, Germany