Turrilites
Genus of molluscs (fossil) / From Wikipedia, the free encyclopedia
Turrilites is a genus of helically coiled ammonoid cephalopods from the lower part of the Upper Cretaceous (Cenomanian and Turonian); generally included in the Ancyloceratina. Previously (Arkell, 1957) it was included in the ammonoid suborder, Lytoceratina.
Quick Facts Scientific classification ...
Turrilites | |
---|---|
Turrilites costatus from Rouen, France, on display at Galerie de paléontologie et d'anatomie comparée, Paris | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Suborder: | †Ancyloceratina |
Family: | †Turrilitidae |
Genus: | †Turrilites Lamarck, 1801 |
Close
The shell of Turrilites is tightly wound in a high trochospiral, with an acute angle at the apex. Ribs are weak to strong and may have 3 or 4 rows of equal numbers of tubercles. Thought to be derived from Mariella. Includes three subgenera.