Foraminifera taxon details
original description
Henson, F. R. S. (1948). Larger imperforate foraminifera of south-western Asia. Families Lituolidae, Orbitolinidae and Meandropsinidae. <em>British Museum (Natural History).</em> 1-127. page(s): p. 11 [details] Available for editors [request]
From editor or global species database
Diagnosis Test free, elongate conical, brief early planispiral coil followed by elongate uncoiled and rectilinear stage; wall finely agglutinated, with imperforate epidermis, radial exoskeletal septula or beams are perpendicular to the septa and outer wall but unrelated to the apertural openings present in the early stage, beams bifurcating inward in later chambers and accompanied by rafters that parallel the septa, forming a coarse alveolar network in the lower part of the chamber and becoming finer in the upper part, endoskeletal pillars in the central region of the test are continuous in successive chambers; aperture cribrate, a series of openings in a circular area of the terminal face. L. Jurassic (M. Lias) to M. Jurassic (Bathonian); Morocco; Iraq; China: Markam region. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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