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Foraminifera taxon detailsOrthokarstenia Dietrich, 1935 †
 722208 (urn:lsid:marinespecies.org:taxname:722208)
accepted
Genus
Orthocerina ewaldi Karsten, 1858 † accepted as Orthokarstenia ewaldi (Karsten, 1858) † (type by original designation)
Siphogenerita Furrer, 1961 † · unaccepted (Subjective junior synonym in...)
Subjective junior synonym in opinion of Loeblich and Tappan (1987)
marine,
fossil only
feminine
Dietrich, W. O. (1935). Zur Stratigraphie der Kolumbianischen Ostkordillere. <em>Zentralblatt für Mineralogie, Geologie und Paläontologie.</em> 1935B: 74-82.
page(s): p. 80 [details]
Diagnosis Test narrow, elongate, enlarging gradually from a rounded base, microspheric generation with early triserial stage followed...
Diagnosis Test narrow, elongate, enlarging gradually from a rounded base, microspheric generation with early triserial stage followed by a short biserial stage, megalospheric generation with proloculus followed immediately by biserial stage, both generations with chambers subcylindrical and somewhat inflated in the uniserial adult, lower chamber margin crenulated, sutures distinct, depressed, overlapped by the chamber crenulations; wall calcareous, finely perforate, surface smooth or with fine longitudinal striae or low costae; aperture terminal, elliptical to reniform, with short neck and distinct lip and provided with spoutlike internal toothplate that extends to the previous foramen, those of successive chambers changing orientation by 120¡ to 180¡, spout may terminate in a small opening adjacent to the concave side of the aperture but not connected to it. U. Cretaceous (Turonian to Maastrichtian); North America; South America; Africa. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Orthokarstenia Dietrich, 1935 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=722208 on 2025-05-17
Date action by
original description
Dietrich, W. O. (1935). Zur Stratigraphie der Kolumbianischen Ostkordillere. <em>Zentralblatt für Mineralogie, Geologie und Paläontologie.</em> 1935B: 74-82.
page(s): p. 80 [details] original description (of Siphogenerita Furrer, 1961 †) Furrer, M. A. (1961). <i>Siphogenerita</i>, new genus and a revision of California Cretaceous "<i>Siphogenerinoides</i>" (Foraminiferida). <em>Proceedings of the Biological Society of Washington.</em> 74: 267-274., available online at https://www.biodiversitylibrary.org/part/44759#/summary page(s): p. 271 [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 narrow, elongate, enlarging gradually from a rounded base, microspheric generation with early triserial stage followed by a short biserial stage, megalospheric generation with proloculus followed immediately by biserial stage, both generations with chambers subcylindrical and somewhat inflated in the uniserial adult, lower chamber margin crenulated, sutures distinct, depressed, overlapped by the chamber crenulations; wall calcareous, finely perforate, surface smooth or with fine longitudinal striae or low costae; aperture terminal, elliptical to reniform, with short neck and distinct lip and provided with spoutlike internal toothplate that extends to the previous foramen, those of successive chambers changing orientation by 120¡ to 180¡, spout may terminate in a small opening adjacent to the concave side of the aperture but not connected to it. U. Cretaceous (Turonian to Maastrichtian); North America; South America; Africa. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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