Discorbacea Temporal range:
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Scientific classification | |
(unranked): | |
(unranked): | |
Phylum: | |
Class: | |
Order: | |
Superfamily: | Discorbacea Ehrenberg, 1838
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Family | |
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 trochspiral; an umbilical or interiomarginal aperture, with or without supplementary apertures; and a wall structure that is optically radial. [2] [3]
Eight families are currently recognized, further characterized here in. [3]
Two other families were included, the Asterigerinidae and Epistomariidae, which have been removed to the Asterigerinacea. 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. [2]
Discorbacea Temporal range:
| |
---|---|
Scientific classification | |
(unranked): | |
(unranked): | |
Phylum: | |
Class: | |
Order: | |
Superfamily: | Discorbacea Ehrenberg, 1838
|
Family | |
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 trochspiral; an umbilical or interiomarginal aperture, with or without supplementary apertures; and a wall structure that is optically radial. [2] [3]
Eight families are currently recognized, further characterized here in. [3]
Two other families were included, the Asterigerinidae and Epistomariidae, which have been removed to the Asterigerinacea. 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. [2]