Foraminifera taxon details
original description
Brönnimann, P.; Brown, N. K. (1956). Taxonomy of the Globotruncanidae. <em>Eclogae Geologicae Helvetiae.</em> 48: 503-562., available online at https://www.e-periodica.ch/digbib/view?pid=egh-001:1955:48#548 page(s): p. 557 [details]
original description
(of Helvetiella Longoria & Gamper, 1984 †) Longoria, J. F.; Gamper, M. A. (1984). Subfamily Helvetiellinae, a New Group of Late Cretaceous (Maastrichtian) Planktonic Foraminifera. <em>Micropaleontology.</em> 30(2): 171-179., available online at https://doi.org/10.2307/1485716 page(s): p. 174 [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 relatively large, up to 0.5 mm in diameter, with moderately high trochospiral coil, chambers globular to somewhat elongate as seen in edge view, enlarging gradually, four to six in the final whorl, sutures radial, depressed, umbilicus about one-fourth the test diameter, periphery rounded, noncarinate, peripheral outline lobulate; wall calcareous, perforate, surface with prominent pustules and rugosities but without regularly aligned costellae; primary aperture umbilical, provided with tegilla and with both proximal and distal accessory apertures. U. Cretaceous (M. to U. Maastrichtian); Trinidad; Tunisia. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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