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Foraminifera taxon detailsOrithostella Eicher & Worstell, 1970 †
 722346 (urn:lsid:marinespecies.org:taxname:722346)
accepted
Genus
Orithostella viriola Eicher & Worstell, 1970 † (type by original designation)
marine,
fossil only
feminine
Eicher, D. L.; Worstell, P. (1970). Cenomanian and Turonian Foraminifera from the Great Plains, United States. <em>Micropaleontology.</em> 16(3): 269-324., available online at https://doi.org/10.2307/1485079
page(s): p. 294 [details] Available for editors  [request]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2024). World Foraminifera Database. Orithostella Eicher & Worstell, 1970 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=722346 on 2024-07-09
Date action by
original description
Eicher, D. L.; Worstell, P. (1970). Cenomanian and Turonian Foraminifera from the Great Plains, United States. <em>Micropaleontology.</em> 16(3): 269-324., available online at https://doi.org/10.2307/1485079
page(s): p. 294 [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] additional source Revets, S. A. (1996). The generic revision of five families of Rotaliine Foraminifera - Part 2. The Anomalinidae, Alabaminidae, Cancrisidae & Gavelinellidae. <em>Cushman Foundation for Foraminiferal Research, Special Publication.</em> 57-113., available online at http://www.cushmanfoundation.org/specpubs/sp34.pdf [details] Available for editors [request] From editor or global species database
Diagnosis Test with a flat trochospiral coil, planoconvex, involute side convex to subconical, chambers strongly protruding around the narrow umbilicus that may be filled with a central boss, flat side semievolute, with one and a half to two whorls, and about seven to nine chambers in the final whorl, the umbilical margin produced as a large umbilical flap that may cover part of the preceding chamber, sutures curved and sinuate, depressed on the convex involute side, flush to somewhat depressed adjacent to the umbo on the flat side, periphery subangular, with a thick imperforate keel; wall calcareous, optically granular, perforate on both sides of the test; aperture an interiomarginal equatorial arch against the periphery of the preceding whorl, continuing onto the flat side around the umbilical flap and along the preceding suture, those of previous chambers of the final whorl remaining open around the spiral suture and successive flaps. U. Cretaceous (Cenomanian to Turonian); cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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