Superfamily Miliolacea: A Three-Fold Layered Wall --- Superfamily Miliocea Ehrenberg, 1839, Emended; New Superfamily Hauerincea

H.V. Andersen

Abstract


The Superfamily Miliolacea Ehrenberg,1839, is here restricted to the calcareousimperforate Foraminiferida that have a pitted exterior surface and a wall composed of three layers. Excluded are those Foraminiferida that have a smooth porcelaneous surface, as exhibited when viewed in reflected light.  Described herein as new are the genera Hemimiliola, Heteromiliola, and Miliolacostata.  These three genera are distinguished by the texture of the outer wall of the test (smooth, ribbed, or costate), the chamber arrangement, and the distribution of pits (juxtaposed or separated). Five new subfamilies are here designated and described:  the HEMIMILIOLINAE, HETEROMILIOLINAE,TEXININAE, HELENTAPPANELLINAE, and MILIOLACOSTATINAE, which include all of the known species of Miliolacea from the Gulf Coastal Plain.The new Superfamily HAUERINACEA, here designated, is erected to accommodate all former species of Miliolacea with a smooth porcelaneous surface, as exhibited when viewed in reflected light.


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