Foraminifera taxon details
original description
Arnaud-Vanneau, A. (1980). Micropaléontologie, paléoécologie, et sédimentologie d'une plate-forme carbonatée de la marge passive de la Téthys : l'Urgonien du Vercors septentrional et de la Chartreuse (Alpes occidentales). <em>Géologie Alpine Mem.</em> 11(1-3): 1-874., available online at https://tel.archives-ouvertes.fr/tel-00662977/document page(s): p. 510 [details] Available for editors [request]
From editor or global species database
Diagnosis Test large, crozier-shaped, planispirally enrolled in the early stage, biumbilicate coil of about two whorls followed by an elongate uncoiled stage of biserially arranged chambers that commonly are not in the same plane as those of the early coil, sutures radial in the coiled stage, nearly horizontal in the biserial stage; wall agglutinated, outer part imperforate, microgranular calcareous and finely agglutinated with smoothly finished surface, subepidermal alveolar layer of test and septa with outer coarser alveoles dichotomously branching inward into more numerous and regularly arranged second order alveoles, inner part of the wall coarse grained, incorporating quartz particles, foraminiferal tests, and other shell fragments; aperture interiomarginal, large, occupying about two-thirds of the base of the face of the final chamber. L. Cretaceous (Barremian to Bedoulian); France. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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