Kingdom Animalia Family Kosmoceratidae Rank Species Subclass Ammonites | Superfamily Stephanocerataceae Genus Kosmoceras Order Ammonitida | |
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Similar Kosmoceras, Ammonites, Kosmoceras spinosum, Kepplerites, Kossmaticeras | ||
Www fossilplanet com ammonites kosmoceras jason
Kosmoceras jason is an ammonite species from the Callovian (Middle Jurassic), lasting between 154 and 160 Ma.
Contents
Description
Kosmoceras jason has a shell that reaches a size of about 10 cm. These ammonites have a very compressed section and a narrow umbilicus on phragmocone. Ornamentation is fine and dense.
This species is characterized by sexual dimorphism, with macroconch (large shell) in females and microconch (small shell) in males.
References
Kosmoceras jason Wikipedia(Text) CC BY-SA