Textulariida

Textulariida Temporal range: Cambrian - Recent
Textularia shell
Scientific classification
Kingdom:	Protista
Phylum:	Rhizaria
Class:	Foraminifera
Order:	Textulariida
Superfamilies
Ammodiscacea Astrorhizacea Ataxophragmiacea Hormosinacea Lituolacea Orbitolinacea Textulariacea Trochamminacea

The Textulariida is a group of common foraminiferans that produce agglutinated shells, composed of foreign particles held in an organic or calcareous cement. Commonly the order is taken to include all such species, but genetic studies indicate that they are not all closely related, and several superfamilies have been moved to the order Allogromiida. The remaining forms are sometimes divided into three orders: the Trochamminida and Lituolida which have organic cement and the Textulariida sensu stricto which uses calcareous cement. All three are known as fossils from the Cambrian onwards.

References

Loeblich, A.R. and H. Tappan. 1984. Suprageneric classification of the Foraminiferida (Protozoa). Micropaleontology 30(1):1-70
_____ -- _____ 1988  : Classification of the Foraminifera
Sen Gupta Barun K. 1992 Systematics of Modern Foraminifera
Treatise on Invertebrate Paleontology Part C Protista 2, 1964 . Geological Society of America and University of Kansas Press. R.C. Moore (ed)