Cuneus (foram)
| Cuneus Temporal range: mid Late Cretaceous to Paleocene | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| (unranked): | SAR |
| (unranked): | Rhizaria |
| Superphylum: | Retaria |
| Phylum: | Foraminifera |
| Order: | Rotaliida |
| Superfamily: | Turrilinacea |
| Family: | Turrilinidae |
| Genus: | Cuneus Voloshina, 1974 |
Cuneus is a genus of foraminifera in the Rotaliida found in Upper Cretaceous (Coniacian) to Paleocene marine sediments throughout the boreal regions.
The test is pyramidal in form, triserial throughout, with a triangular section, and may be slightly twisted. The test wall is calcareous, transparent. and finely perforate, the surface smooth. Sides are flat to slightly concave; sutures flush and oblique. The aperture is a narrow vertical loop on the apertural face of the final chamber.
References
- Alfred R. Loeblich Jr and Helen Tappan,1988. Forminiferal Genera and their Classification. Van Nostrand Reinhold.
This article is issued from Wikipedia - version of the 10/31/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.