Cassidulinacea

Cassidulinacea
Temporal range: Paleocene - Recent
Scientific classification
Domain: Eukaryota
Kingdom: Rhizaria
Superphylum: Retaria
Phylum: Foraminifera[1]
Order: Rotaliida
Superfamily: Cassidulinacea
(d'Orbigny, 1839)

The Cassidulinacea is a superfamily of benthic amoeboid protists included in the foraminiferal order Rotaliida that has been extant from the Paleocene down to the present. Tests are composed of secreted, optically radial or granular, perforate calcite with chambers biserially coiled at least in the early part, Apertures are usually an interiomarginal slit, but may become terminal and may have secondary features.

Cassidulinacea is included in the suborder Rotaliina by Loeblich and Tappan, e.g. 1964 and 1988, since redefined as the Rotaliida and since reassigned to the Buliminida in Sen Gupta 2002. Two families are included. They are the:

Cassidulindae, and
Cassidulinitidae

The Cassidulinidae, which has a range from the Paleocene to the present, includes most of the genera. The Cassidulinitidae which includes only Cassidulinita is restricted to the Pliocene.

References

  1. B. K. Sen Gupta, 1999 Systematics of Modern Foraminifera; Modern Foraminifera, Kluwer Academic Publishers

Further Reading

This article is issued from Wikipedia - version of the Saturday, March 05, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.