Umiaites
| Umiaites Temporal range: U Jurassic (Tith) | |
|---|---|
| Fossil | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Superfamily: | Perisphinctaceae |
| Family: | Olcostephanidae |
| Subfamily: | Spiticeratinae |
| Genus: | Umiaites Spath, 1931 |
Umiaites is a Late Jurassic (Tithonian stage) ammonitid included in the Olcostephanidae which is part of the Perisphinctaceae. The type is Umiaites rajnathi Spath, 1931.
The shell of Umiaites is large, reaching a diameter of 16 cm or greater, and evolute with a wide shallow umbilicus. Flanks are flat to gently curving. Whorls overlap the previous by a fourth.
So far, Umiaites is known only from Kutch in western India and is considered endemic to the region. Related genera include Spiticeras and Proniceras, with different distribution.
references
- The Genus Umiates Spath, 1931 (Ammonoidea) from the Tithonian (Late Jurassic) of Kutch, Western India.
This article is issued from Wikipedia - version of the Monday, November 30, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.