Foraminifera taxon details
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test small, biserial, slightly twisted, sides flattened, angles carinate, adult test rectangular to rhomboidal in section, sutures in the early stage flush, later ones depressed, with chambers inflated and carinate just distal to the sutures; wall calcareous, optically radial, finely perforate, surface smooth except for the elevated and nodose lateral carina and basal margins of the chambers; aperture at the base of the final chamber narrow and elongate, with one margin produced as an elevated lip and the other bending inward to form a folded toothplate, free part of the toothplate showing through the aperture as a small tooth. U. Cretaceous (Coniacian) to L. Eocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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