Turrilites costatus
| Turrilites costatus Temporal range: Cenomanian | |
|---|---|
 | |
| Turrilites costatus from Rouen, France, on display at Galerie de paléontologie et d'anatomie comparée, Paris | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ancyloceratina ? |
| Superfamily: | Turrilitaceae |
| Family: | Turrilitidae |
| Genus: | Turrilites |
| Species: | T. costatus |
| Binomial name | |
| Turrilites costatus Lamarck 1801 | |
Turrilites costatus is a species of helically coiled ammonoid cephalopod, from the lower part of the Upper Cretaceous (Cenomanian).
Description
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
- Arkell et al., Mesozoic Ammonoidea (L222); Treatise on Invertebrate Paleontology Part L, Ammonoidea. Geological Soc. of America and Univ Kansas Press.
- The Paleobiology Database Turrilites entry
- Ammonites
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