Orbitoidacea

Orbitoidacea

[‚ȯr·bə·tȯi′dās·ē‚ə] (invertebrate zoology) A superfamily of foraminiferan protozoans in the suborder Rotaliina characterized by a low trochospire or a planispiral, uncoiled or branching test composed of radial calcite with bilamellar septa.