Jump to content

Rotorboides

Edit links
From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Deuterostome (talk | contribs) at 12:03, 31 October 2016 (→top: clean up, replaced: regnum = Rhizaria → unranked_subregnum = Rhizaria using AWB). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Rotorboides
Temporal range: Recent
Scientific classification
Domain:
Eukaryota
(unranked):
SAR
(unranked):
Rhizaria
Superphylum:
Retaria
Phylum:
Foraminifera
Order:
Rotaliida
Superfamily:
Discorbacea
Family:
Rosalinidae
Genus:
Rotorboides

Sellier de Civrieux, 1977

Rotorboides is a genus of recent (Holocene) bottom dwelling (benthic) forams from the Atlantic, Pacific and Indian Oceans, related to Rosalina.

The test is trochospiral and planoconvex, with a broadly rounded periphery and about six to nine chambers in the final whorl. Sutures on the spiral side are crescentic and strongly oblique. Chambers on the umbilical side are subtriangular, each with a triangular folium, or flap, that extends into the umbilical area, folia of successive chambers fuse to form an umbilical plate that is solid or has only rare perforations. Sutures on the umbiical side are radial and deeply incised. The test wall is calcareous, coarsely perforate on the spiral side, but imperforate adjacent to the sutures. The umbilical side is imperforate and smooth. The aperture is an interiomarginal arch, outside the umbilicus, extending nearly to the periphery.

References

Retrieved from "https://en.wikipedia.org/w/index.php?title=Rotorboides&oldid=747095678"