Foraminifera taxon details
original description
Rauzer-Chernousova, D. M.; Fursenko, A. V. (1959). Основы палеонтологии: Общая часть. Простейшие - Principles of Paleontology, part 1 Protozoa. <em>Изд-во АН СССР - Akademiya Nauk SSSR.</em> 1-368., available online at http://www.geokniga.org/books/611 page(s): p. 278 [details] Available for editors [request]
basis of record
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp., available online at https://books.google.pt/books?id=n_BqCQAAQBAJ [details] Available for editors [request]
From editor or global species database
Diagnosis Test trochospiral, planoconvex, chambers low and lunate and sutures arched and limbate on the spiral side, chambers subtriangular and sutures radial and depressed on the umbilical side, chambers subdivided by an internal plate parallel to the plane of coiling, umbilicus closed, periphery acute; wall calcareous, aragonitic, thin, finely perforate; aperture interiomarginal, extraumbilical-umbilical, with a short looplike extension up the apertural face near the posterior margin of the chamber, intercameral foramen rounded, located above the attachment of the internal plate. M. Jurassic to L. Cretaceous (Valanginian); Europe; USSR. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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