see text Discorbacea, Discorboidea in recent taxonomies, is a superfamily of foraminifera,[1] (testate protists), with a range extending from the Middle Triassic to the present, characterized by chambers arranged in a low trochospiral; an umbilical or interiomarginal aperture, with or without supplementary apertures; and a wall structure that is optically radial.
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.
Finally the Eponididae was once included in the Orbitoidacea before being made part of the Discorbacea.