Foraminifera taxon details
From editor or global species database
Diagnosis Test free, compressed conical to flabelliform, early trochospire of about five chambers followed by very broad and low biserially arranged chambers, commonly compressed parallel to the plane of biseriality, interior subdivided into nearly rectangular chamberlets by radial partitions arising perpendicular to the outer wall and projecting inward toward the plane of biseriality, and by horizontal partitions paralleling the septa; wall agglutinated, imperforate, with reticulate subepidermal layer; aperture a row of pores at the base of the septal face. L. Cretaceous (Valanginian) to U. Cretaceous (Coniacian); China; USA; Europe. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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