Kosmoceratidae

Kosmoceras spinosum
Temporal range: Middle Jurassic
Fossil shell of Kosmoceras spinosum from Calvados (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom: Animalia
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Stephanocerataceae
Family: Kosmoceratidae
Haug 1887

Kosmoceratidae is an extinct ammonite family from the Callovian (Middle Jurassic) to Early Cretaceous.

Kosmoceratidae are probably the most polymorphic groups of Jurassic ammonites. These ammonoids have a more or less tabulate venter, with lateral or ventrolateral tubercles. The aptychus is double valved with a concentrically ribbed surface. [1]

Genera

[2]

References

  1. Treatise on invertebrate paleontology. Part F : America / edited by Raymond C. Moore. -- University of Kansas Press, 1956
  2. Mikko's Phylogeny Archive
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