Foraminifera taxon details
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test elongate, trochospirally enrolled in the early stage, later triserial, with rapidly enlarging and inflated chambers strongly overlapping those preceding, spiral suture nearly horizontal, intercameral sutures nearly vertical, depressed; wall calcareous, finely perforate, optically granular in an Eocene species, although the Oligocene type species is optically radial, surface smooth; aperture an ovate opening parallel to the basal suture, wider near the midpoint and bordered by an elevated narrow lip, a part of the lip near the test axis bends downward to continue as a simple columnar toothplate joining the aperture to the previous foramen. L. Eocene to M. Oligocene; France; Denmark; Netherlands; Poland. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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