Foraminifera taxon details
From editor or global species database
Diagnosis Test free, flattened, reniform to discoidal, juvenile stage unknown, chambers low and broad, up to forty in the adult, rapidly increasing in breadth, arched and uniserial in the early stage, later becoming cyclic, periphery bluntly rounded; wall microgranular, agglutinated, chambers subdivided by numerous exoskeletal vertical partitions arising from the wall of the flat sides of the test perpendicular to the septa, to attach to a median vertical perforated plate that bisects the test, these secondary partitions alternating in position from one chamber to the next; aperture cribrate, with two rows of pores on the apertural face, one on either side of the median line, those of successive chambers alternating in position from chamber to chamber rather than aligned, as the secondary partitions lie over the apertural openings of the previous chamber. L. Cretaceous (Valanginian); France. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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