Kosmoceras
Encyclopedia
Kosmoceras is a moderately evolute ammonite
genus from the upper Callovian
(Middle Jurassic) of Europe with a simple apterure and irregular ribbing interrupted by an irregular row of lateral tubercles. Strong ventral tubercles are separated by a smooth depression running along the rim.
Kosmocers belongs to the Sephanocerataceae and is the type genus for the Family Kosmoceratidae and for the subfamily Kosmoceratinae. Kosmoceras spinosum Waagen is the type species.
Lobokosmoceras and Gulielmicerashave been regarded as subgenera of Kosmoceras. Gulielmites is a fine-ribbed variety of Kosmoceras jason
Ammonitida
The Ammonitida is an order of more highly evolved ammonoid cephalopods from the Jurassic and Cretaceous time periods, commonly with intricate ammonitic sutures....
genus from the upper Callovian
Callovian
In the geologic timescale, the Callovian is an age or stage in the Middle Jurassic, lasting between 164.7 ± 4.0 Ma and 161.2 ± 4.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian....
(Middle Jurassic) of Europe with a simple apterure and irregular ribbing interrupted by an irregular row of lateral tubercles. Strong ventral tubercles are separated by a smooth depression running along the rim.
Kosmocers belongs to the Sephanocerataceae and is the type genus for the Family Kosmoceratidae and for the subfamily Kosmoceratinae. Kosmoceras spinosum Waagen is the type species.
Lobokosmoceras and Gulielmicerashave been regarded as subgenera of Kosmoceras. Gulielmites is a fine-ribbed variety of Kosmoceras jason