Discorbacea, Discorboidea in recent taxonomies, is a superfamily of

foraminifera Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular Ectoplasm (cell biology), ectoplasm for catching food and ot ...

, Loeblich and Tappan,1988
Forminiferal Genera and their Classification
(testate

protists A protist () is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor), the excl ...

), with a range extending from the

Middle Triassic In the geologic timescale, the Middle Triassic is the second of three epochs of the Triassic period or the middle of three series in which the Triassic system is divided in chronostratigraphy. The Middle Triassic spans the time between Ma and ...

to the present, characterized by chambers arranged in a low trochspiral; an umbilical or interiomarginal aperture, with or without supplementary apertures; and a wall structure that is optically radial.Loeblick and Tappan,1964. Sarcodina Chiefly "Thecamoebians" and Foraminiferida;

Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ...

, part C Protista 2Sen Gupta, 2002. Modern Foraminifer

Pub Springer Eight families are currently recognized, further characterized here in. * Discorbidae – Discorbacea in which each chamber is partly divided by an imperforate wall and the umbilical area partly is covered by chamber extensions. '' Discorbis'', '' Neoeponides'' * Bagginidae – Discorbacea with an overall finely perforate test, but imperforate in a part of ventral side '' Baggina'', '' Cancris'' * Eponididae – in which the aperture is interiomarginal and slitlike (or a narrow arch) or areal and cribrate. '' Eponides'', '' Joanella'', '' Paumotua'', '' Poroeponides'' * Heleninidae – in which the primary aperture is interiomarginal and secondary apertures are sutural '' Helenina'' * MIsissippinidae – have distinct, translucent or opaque bands near the periphery on one or both sides; '' Mississippina'', '' Stomatorbina'' * Pegidiidae – in which coiling is a modified trochospiral, with resorbed early chambers and apertures are open ends of tubes on the ventral side '' Pegidia'' * Rotalinidae – have simple chamber interiors, an umbilicus partly covered by chamber extensions or closed, and an aperture that is a low interiomarginal arch. '' Gavellinopsis'', '' Nevconorbina'', '' Rosalina'' * Sphaeroidinidae – Discorbacea with strongly overlapping chambers, arranged trochospirally or in different planes; and single slitlike or multiple apertures. '' Sphaeroidina'' Two other families were included, the Asterigerinidae and Epistomariidae, which have been removed to the

Asterigerinacea The Asterigerinacea (or Asterigerinoidea) is a superfamily of Foraminifera included in the order Rotaliida, proposed by Loeblich and Tappan in 1988.Loeblick A.R. and Tappan H,1988. Forminiferal Genera and their Classification. (e-book) GSI The ...

. Some now included families such as the Bagginidae were once defined as a subfamily, the Bagginindae, based on the genus ''Baggina'', in the Discorbidae. As a result the discorbid subfamily Discorbine became the present Discorbidae. The Pegidiidae, originally the rotaliitid subfamily Pegidiinae was removed from the Rotaliacea and added to the Discorbacea as a family. ''Helenina'', a genus in the Discorbinae, became the type for its own family, the Heleninidae. Finally the Eponididae was once included in the Orbitoidacea before being made part of the Discorbacea.

References

{{Taxonbar, from=Q5281687 Foraminifera superfamilies Rotaliida