Orthosphinctes is a genus of ammonites belonging to the order Ammonitida family Ataxioceratidae. 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. Gallery References Jurassic ammonites Ammonites of Europe Kimmeridgian life Ammonitida genera Perisphinctoidea