Planorbulinacea: taxon details and analytics

Domain
Kingdom
Chromista
Phylum
Foraminifera
Class
Globothalamea
Order
Rotaliida
Family
Genus
Species
Scientific Name
Planorbulinacea

Summary description from Wikipedia:

Planorbulinacea

The Planorbulinacea are a superfamily of rotalliid foraminifera that has been extant since the Early Cretaceous (Berriasian), characterized by trochospiral tests, at least in early stage but which later may become uncoiled. The test wall is of perforate hyaline calcite, commonly optically radial in structure, with crystallographic c-axes perpendicular to the surface. The apertural face may be imperforate; the aperture interiomarginal and extraumbilical-umbilical to nearly equatorial in coiled forms, subterminal in uncoiled forms.

The Planorbulinacea unite six families which are distinguished primarily by their morphological differences.

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