Turrilites (Turrilites) costatus is a species of helically coiled ammonoid cephalopod, from the lower part of the Upper Cretaceous (Cenomanian).

Turrilites costatus
Temporal range: Cenomanian
Turrilites costatus from Rouen, France, on display at Galerie de paléontologie et d'anatomie comparée, Paris
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Suborder: Ancyloceratina
Family: Turrilitidae
Genus: Turrilites
Species:
T. costatus
Binomial name
Turrilites costatus
Lamarck, 1801

Description

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The shell of this species can reach a length of about 11 centimetres (4.3 in). It is tightly wound in a high trochospiral, with an acute angle at the apex. Ribs are weak, with rows of strong tubercles.

References

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