WoRMS taxon details
Spiroloculina d'Orbigny, 1826
112046 (urn:lsid:marinespecies.org:taxname:112046)
accepted
Genus
Spiroloculina depressa d'Orbigny, 1826 (type by subsequent designation)
Bidentina Mikhalevich, 1988 · unaccepted (Opinion of Jones (1994))
Flintia Schubert, 1911 · unaccepted (opinion of Jones (1994))
Mikrobelodontos Loeblich & Tappan, 1994 · unaccepted (Opinion of Jones (2013))
- Species Spiroloculina abatholopa Loeblich & Tappan, 1994
- Species Spiroloculina acescata Cushman, 1932
- Species Spiroloculina aequa Cushman, 1932
- Species Spiroloculina aequiformis McCulloch, 1977
- Species Spiroloculina albatrossi Cushman & Todd, 1944
- Species Spiroloculina anderseni Todd & Brönnimann, 1957
- Species Spiroloculina angulariformis McCulloch, 1981
- Species Spiroloculina angulata Cushman, 1917
- Species Spiroloculina angulatiformis McCulloch, 1977
- Species Spiroloculina angulosa Terquem, 1878
- Species Spiroloculina angulosa d'Orbigny in Fornasini, 1904 (accepted > unreplaced junior homonym, Primary junior homonym of Spiroloculina angulosa Terquem, 1878)
- Species Spiroloculina angusteoralis Parr, 1950
- Species Spiroloculina antillarum d'Orbigny, 1839
- Species Spiroloculina aperta Cushman & Todd, 1944
- Species Spiroloculina atlantica Cushman, 1947
- Species Spiroloculina barbariana McCulloch, 1977
- Species Spiroloculina berthelotiana Wiesner, 1923
- Species Spiroloculina biconcava McCulloch, 1977
- Species Spiroloculina biformis Shchedrina, 1984
- Species Spiroloculina boonei McCulloch, 1977
- Species Spiroloculina bradyi Barker, 1960
- Species Spiroloculina braithwaitensis McCulloch, 1977
- Species Spiroloculina caduca Cushman, 1922
- Species Spiroloculina caledoniana McCulloch, 1981
- Species Spiroloculina californica Cushman & Todd, 1944
- Species Spiroloculina canaliculata d'Orbigny, 1846
- Species Spiroloculina carinata Fornasini, 1905
- Species Spiroloculina caudata Ehrenberg, 1845
- Species Spiroloculina charlesensis McCulloch, 1977
- Species Spiroloculina chincaensis McCulloch, 1977
- Species Spiroloculina clara Cushman, 1932
- Species Spiroloculina colomi Said & Kamel, 1956
- Species Spiroloculina communis Cushman & Todd, 1944
- Species Spiroloculina concepcionensis McCulloch, 1977
- Species Spiroloculina convexa Said, 1949
- Species Spiroloculina corrugata Cushman & Todd, 1944
- Species Spiroloculina cortesiana McCulloch, 1977
- Species Spiroloculina cortesica McCulloch, 1977
- Species Spiroloculina cristobalensis McCulloch, 1977
- Species Spiroloculina curvata McCulloch, 1977
- Species Spiroloculina cushmani Hada, 1931
- Species Spiroloculina cymbium d'Orbigny, 1839
- Species Spiroloculina dentata Cushman & Todd, 1944
- Species Spiroloculina depressa d'Orbigny, 1826
- Species Spiroloculina dilatata d'Orbigny, 1846
- Species Spiroloculina dispar McCulloch, 1981
- Species Spiroloculina dissidens McCulloch, 1977
- Species Spiroloculina distincta McCulloch, 1977
- Species Spiroloculina domantayi McCulloch, 1977
- Species Spiroloculina ecuadorensis McCulloch, 1977
- Species Spiroloculina elegantissima Said, 1949
- Species Spiroloculina elevata Wiesner, 1923
- Species Spiroloculina elongata d'Orbigny, 1852 (accepted > unreplaced junior homonym, Primary junior homonym of Spiroloculina elongata Ehrenberg, 1844)
- Species Spiroloculina estebani Tinoco, 1958
- Species Spiroloculina excavata d'Orbigny, 1846
- Species Spiroloculina excisa Cushman & Todd, 1944
- Species Spiroloculina eximia Cushman, 1922
- Species Spiroloculina folium Todd, 1957
- Species Spiroloculina foveolata Egger, 1893
- Species Spiroloculina fragilis Uchio, 1960
- Species Spiroloculina frailesiana McCulloch, 1977
- Species Spiroloculina granulata Mikhalevich, 1976
- Species Spiroloculina grateloupi d'Orbigny, 1852
- Species Spiroloculina guppyi Todd & Brönnimann, 1957
- Species Spiroloculina hadai Thalmann, 1933
- Species Spiroloculina halmosae McCulloch, 1977
- Species Spiroloculina hancocki McCulloch, 1981
- Species Spiroloculina henbesti Petri, 1955
- Species Spiroloculina hyalina Schulze, 1875
- Species Spiroloculina ildefonsoensis McCulloch, 1977
- Species Spiroloculina impressa Terquem, 1878
- Species Spiroloculina incisa Cushman, 1921
- Species Spiroloculina indica Cushman & Todd, 1944
- Species Spiroloculina inflatiformis McCulloch, 1977
- Species Spiroloculina insularis McCulloch, 1977
- Species Spiroloculina jamesbayensis McCulloch, 1977
- Species Spiroloculina jucunda Cushman & Ellisor, 1944
- Species Spiroloculina krumbachi Wiesner, 1911
- Species Spiroloculina lancea Ehrenberg, 1861
- Species Spiroloculina latiformis McCulloch, 1977
- Species Spiroloculina lavelaensis McCulloch, 1981
- Species Spiroloculina libyca Martinotti, 1921
- Species Spiroloculina limbata d'Orbigny, 1826
- Species Spiroloculina lirata Cushman, 1954
- Species Spiroloculina lucida Cushman & Todd, 1944
- Species Spiroloculina lyra d'Orbigny, 1852
- Species Spiroloculina manifesta Cushman & Todd, 1944
- Species Spiroloculina marshallana Todd, 1954
- Species Spiroloculina mayori Cushman, 1924
- Species Spiroloculina milletti Wiesner, 1912
- Species Spiroloculina moresbyensis Rasheed, 1971
- Species Spiroloculina mosesi Tinoco, 1958
- Species Spiroloculina neocircularis McCulloch, 1977
- Species Spiroloculina neoprofunda McCulloch, 1981
- Species Spiroloculina nitida d'Orbigny, 1826
- Species Spiroloculina norvegica Cushman & Todd, 1944
- Species Spiroloculina novozealandica Cushman & Todd, 1944
- Species Spiroloculina nuda Cushman, 1917
- Species Spiroloculina nummiformis Said, 1949
- Species Spiroloculina orbis Cushman, 1921
- Species Spiroloculina ornata d'Orbigny, 1839
- Species Spiroloculina ornatiformis McCulloch, 1977
- Species Spiroloculina parvula Chapman, 1902
- Species Spiroloculina pasquai Saidova, 1975
- Species Spiroloculina pellucida Said, 1950
- Species Spiroloculina penangensis McCulloch, 1977
- Species Spiroloculina penangiana McCulloch, 1977
- Species Spiroloculina pilata McCulloch, 1977
- Species Spiroloculina pinasbayensis McCulloch, 1977
- Species Spiroloculina planissima Wiesner, 1912
- Species Spiroloculina planocommunis McCulloch, 1981
- Species Spiroloculina planoconvexa Zheng, 1979
- Species Spiroloculina planulata (Lamarck, 1804)
- Species Spiroloculina plicata d'Orbigny, 1826
- Species Spiroloculina poeyana d'Orbigny, 1839
- Species Spiroloculina portparkerensis McCulloch, 1977
- Species Spiroloculina pseudodepressa Mikhalevich, 1973
- Species Spiroloculina pulchra Shchedrina, 1984
- Species Spiroloculina regularis Cushman & Todd, 1944
- Species Spiroloculina reticosa Chapman, 1915
- Species Spiroloculina robusta Brady, 1884
- Species Spiroloculina rostrata Reuss, 1850
- Species Spiroloculina rotunda d'Orbigny, 1826
- Species Spiroloculina rugosa Cushman & Todd, 1944
- Species Spiroloculina samoaensis Cushman, 1924
- Species Spiroloculina sanbenitoensis McCulloch, 1977
- Species Spiroloculina sannicolasensis McCulloch, 1977
- Species Spiroloculina scrobiculata Cushman, 1921
- Species Spiroloculina serrulata Cushman, 1932
- Species Spiroloculina singaporiana McCulloch, 1977
- Species Spiroloculina soldanii Fornasini, 1886
- Species Spiroloculina stabilis Zheng, 1988
- Species Spiroloculina striata d'Orbigny in Fischer, 1870
- Species Spiroloculina subaequa McCulloch, 1977
- Species Spiroloculina subcommunis Mikhalevich, 1973
- Species Spiroloculina subcommunis McCulloch, 1981 (accepted > unreplaced junior homonym, Primary junior homonym of Spiroloculina subcommunis Mikhalevich, 1973)
- Species Spiroloculina subdepressa Mikhalevich, 1973
- Species Spiroloculina subimpressa Parr, 1950
- Species Spiroloculina sublimbata Parr, 1950
- Species Spiroloculina tenuimargo Cushman, 1917
- Species Spiroloculina tenuiseptata Brady, 1884
- Species Spiroloculina terquemiana Fornasini, 1900
- Species Spiroloculina tobagoensis McCulloch, 1981
- Species Spiroloculina tortuosa Chapman, 1901
- Species Spiroloculina utriaensis McCulloch, 1977
- Species Spiroloculina valida Cushman, 1921
- Species Spiroloculina venusta Cushman & Todd, 1944
- Species Spiroloculina acutimargo Brady, 1884 accepted as Spirophthalmidium acutimargo (Brady, 1884)
- Species Spiroloculina advena Cushman, 1921 accepted as Inaequalina advena (Cushman, 1921) (Opinion of Łuczkowska (1971))
- Species Spiroloculina affixa Terquem, 1878 accepted as Inaequalina affixa (Terquem, 1878) (Opinion of Łuczkowska (1971))
- Species Spiroloculina africana Martinotti, 1921 accepted as Spiroloculina soldanii Fornasini, 1886 (Subjective junior synonym Opinion of Cushman and Todd (1944))
- Species Spiroloculina angulosa d'Orbigny, 1826 accepted as Spiroloculina angulosa d'Orbigny in Fornasini, 1904 (Nomen nudum)
- Species Spiroloculina antillarium d'Orbigny, 1839 accepted as Spiroloculina antillarum d'Orbigny, 1839 (Incorrect subsequent spelling)
- Species Spiroloculina arenaria Brady, 1884 accepted as Sigmoilopsis arenaria (Brady, 1884) (Opinion of Łuczkowska (1974), Łuczkowska in Jones (1994))
- Species Spiroloculina arenata Cushman, 1921 accepted as Sigmoilopsis arenata (Cushman, 1921)
- Species Spiroloculina asperula Karrer, 1868 accepted as Spirosigmoilina asperula (Karrer, 1868) accepted as Spiroglutina asperula (Karrer, 1868) (type species of Spiroglutina )
- Species Spiroloculina attenuata Cushman & Todd, 1944 accepted as Naxotia attenuata (Cushman & Todd, 1944)
- Species Spiroloculina barthelotiana Wiesner, 1923 accepted as Spiroloculina berthelotiana Wiesner, 1923 (Incorrect subsequent spelling)
- Species Spiroloculina bohaiensis Zheng et al., 1978 accepted as Massilina penglaiensis (Jacot, 1925) (Opinion of Zheng & Fu, 2008)
- Species Spiroloculina celata Costa, 1855 accepted as Sigmoilopsis celata (Costa, 1855)
- Species Spiroloculina circularis Cushman, 1921 accepted as Spiroloculina regularis Cushman & Todd, 1944 (unaccepted > junior homonym, Nomen novum in Cushman and Todd (1944) Junior homonym of S. dorsata var. circularis Chapman, 1915 (already preoccupied by S. circularis Toula, 1914 [not figured]))
- Species Spiroloculina concava Wiesner, 1916 accepted as Ophthalmidium concavum (Wiesner, 1916)
- Species Spiroloculina concava Petri, 1954 accepted as Spiroloculina henbesti Petri, 1955 (unaccepted > junior homonym, New name in Thalman (1955) Junior homonym of S. acutimargo var. concava Wiesner, 1916)
- Species Spiroloculina convexiuscula Brady, 1884 accepted as Nodobaculariella convexiuscula (Brady, 1884) (Opinion of Cushman and Todd (1944))
- Species Spiroloculina costata Hada, 1931 accepted as Spiroloculina hadai Thalmann, 1933 (unaccepted > junior homonym, Nomen novum in Thalmann (1933) Junior homonym of S. costata Terquem, 1882)
- Species Spiroloculina costifera Cushman, 1917 accepted as Ptychomiliola costifera (Cushman, 1917) (Opinion of Cushman and Todd (1944))
- Species Spiroloculina crenata Karrer, 1868 accepted as Massilina crenata (Karrer, 1868) (Opinion of Rhumbler (1911))
- Species Spiroloculina disparilis Terquem, 1878 accepted as Inaequalina disparilis (Terquem, 1878) (Opinion of Łuczkowska (1971))
- Species Spiroloculina elegans Cushman, 1918 accepted as Spiroloculina foveolata Egger, 1893 (unaccepted > junior subjective synonym, Junior subjective synonym Opinion of Mamo (2016) [Primary junior homonym of Spiroloculina elegans Silvestri, 1896])
- Species Spiroloculina elongata d'Orbigny, 1826 accepted as Spiroloculina elongata d'Orbigny, 1852 (Nomen nudum)
- Species Spiroloculina folia Todd, 1957 accepted as Spiroloculina folium Todd, 1957 ('folium' neutral noun II declension)
- Species Spiroloculina fragilissima Brady, 1884 accepted as Hauerina fragilissima (Brady, 1884) accepted as Parahauerinoides fragilissima (Brady, 1884) accepted as Pseudohauerina fragilissima (Brady, 1884) (Opinion of Cushman and Todd (1944))
- Species Spiroloculina grata Terquem, 1878 accepted as Sigmoilina grata (Terquem, 1878)
- Species Spiroloculina grateloupi d'Orbigny, 1826 accepted as Spiroloculina grateloupi d'Orbigny, 1852 (Nomen nudum)
- Species Spiroloculina gratteloupi d'Orbigny, 1852 accepted as Spiroloculina grateloupi d'Orbigny, 1852 (Incorrect original spelling; species dedicated to Grateloup, Jean-Pierre-Sylvestre de (1782-1861) )
- Species Spiroloculina henbesti Thalmann, 1955 accepted as Spiroloculina henbesti Petri, 1955 (New name in Thalman (1955) with the autorization of S. Petri who remains the author)
- Species Spiroloculina inaequilateralis Schlumberger, 1893 accepted as Inaequalina inaequilateralis (Schlumberger, 1893) (Type species of inaequalina)
- Species Spiroloculina laevigata Cushman & Todd, 1944 accepted as Massilina laevigata (Cushman & Todd, 1944) (Opinion of Zheng & Fu, 2008)
- Species Spiroloculina obscura Cushman & Todd, 1944 accepted as Spiroloculina grateloupi d'Orbigny, 1852 (Invalid nomen novum. Cushman thought d'Orbigny's species was a junior homonym of Terquem's S. grateloupi (1878) not taking into account the description from 1852 (only Fornasini's 1904))
- Species Spiroloculina penglaiensis Jacot, 1925 accepted as Massilina penglaiensis (Jacot, 1925) (Opinion of Zheng & Fu, 2008)
- Species Spiroloculina poeyiana d'Orbigny, 1839 accepted as Spiroloculina poeyana d'Orbigny, 1839 (Incorrect original spelling)
- Species Spiroloculina pusilla Earland, 1934 accepted as Spirosigmoilina pusilla (Earland, 1934) (Opinion of Jones (1994))
- Species Spiroloculina rotundata Kreuzberg, 1930 accepted as Spiroloculina novozealandica Cushman & Todd, 1944 (unaccepted > junior homonym, Thought to be a junior homonym of a Williamson's subspecies (a misspelling) but a primary junior homonym of Spiroloculina excavata var. rotundata Costa, 1856)
- Species Spiroloculina rotundata d'Orbigny, 1826 accepted as Spiroloculina rotunda d'Orbigny, 1826 (unaccepted > misspelling - incorrect subsequent spelling, rotundata is a misspelling of 'rotunda' in Williamson (1858))
- Species Spiroloculina scita Cushman & Todd, 1944 accepted as Spiroloculina striata d'Orbigny in Fischer, 1870 (Invalid nomen novum. Cushman and Todd overlooked that S. striata d'Orbigny was a valid name in Fischer (1870) [not in Fornasini (1904)] before S. striata Terquem, 1882)
- Species Spiroloculina speciosa Karrer, 1868 accepted as Spirosigmoilina speciosa (Karrer, 1868)
- Species Spiroloculina striata d'Orbigny, 1826 accepted as Spiroloculina striata d'Orbigny in Fischer, 1870 (Nomen nudum)
- Species Spiroloculina tenuis (Cžjžek, 1848) accepted as Spirosigmoilina tenuis (Cžjžek, 1848)
- Species Spiroloculina tenuissima Reuss, 1867 accepted as Sigmoilinita tenuissima (Reuss, 1867) (Opinion of Łuczkowska (1974))
- Species Spiroloculina terquemiana Heron-Allen & Earland, 1911 accepted as Spiroloculina carinata Le Calvez, 1947 † (Invalid nomen novum in Heron-Allen and Earland (1911) also preoccupied by S. terquemiana Fornasini, 1900)
- Species Spiroloculina tripolitana Martinotti, 1921 accepted as Spiroloculina angulosa Terquem, 1878 (Subjective junior synonym Opinion of Cushman and Todd (1944))
- Species Spiroloculina unicostata Cushman, 1917 accepted as Spirophthalmidium unicostatum (Cushman, 1917) (Opinion of Cushman and Todd (1944))
- Species Spiroloculina validus Cushman, 1921 accepted as Spiroloculina valida Cushman, 1921 (Opinion of Walter (1960) Genus is feminine)
- Species Spiroloculina ambullaris Ehrenberg, 1843 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina ampla Terquem, 1880 (uncertain > nomen dubium, Opinion of Lévy et al. (1975))
- Species Spiroloculina arenilega Rhumbler, 1949 (uncertain, Not described Invalid)
- Species Spiroloculina complanata Egger, 1893 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina flexuosa Ehrenberg, 1858 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina galeata Ehrenberg, 1844 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina interrupta Terquem, 1878 (uncertain > nomen dubium, Opinion of Mangin (1960) [broken type; nondiagnostic figure; teratological form] Subjective junior synonym of S. rotunda Opinion of Cushman and Todd (1944))
- Species Spiroloculina involuta Egger, 1893 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina lagena Ehrenberg, 1843 (uncertain > taxon inquirendum, Opinion of Cushman and Todd (1944) [Milioline stage of ?])
- Species Spiroloculina lamella Egger, 1893 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina laminata Terquem, 1880 (uncertain > nomen dubium, Opinion of Lévy et al. (1975))
- Species Spiroloculina minor Ehrenberg, 1840 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina orbicularis Ehrenberg, 1845 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
- Species Spiroloculina tuba Ehrenberg, 1844 (uncertain > nomen dubium, Opinion of Cushman and Todd (1944))
marine, brackish
Orbigny, A. D. d'. (1826). Tableau méthodique de la classe des Céphalopodes. <em>Annales des Sciences Naturelles.</em> vol. 7: 96-169, 245-314., available online at http://biodiversitylibrary.org/page/5753959
page(s): p. 298 [details]
page(s): p. 298 [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2024). World Foraminifera Database. Spiroloculina d'Orbigny, 1826. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=112046 on 2024-12-22
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original description
Orbigny, A. D. d'. (1826). Tableau méthodique de la classe des Céphalopodes. <em>Annales des Sciences Naturelles.</em> vol. 7: 96-169, 245-314., available online at http://biodiversitylibrary.org/page/5753959
page(s): p. 298 [details]
original description (of Flintia Schubert, 1911) Schubert, R. J. (1911). Die fossilen Foraminiferen des Bismarckarchipels und einiger angrenzender Inseln. <em>Abhandlungen der geologischen Reichsanstalt in Wien.</em> 20: 1-130., available online at http://www.zobodat.at/pdf/AbhGeolBA_20_0001-0130.pdf
page(s): p. 124 [details]
original description (of Mikrobelodontos Loeblich & Tappan, 1994) Loeblich, A. R.; Tappan, H. (1994). Foraminifera of the Sahul Shelf and Timor Sea. <em>Cushman Foundation for Foraminiferal Research Special Publication.</em> 31: 1-661., available online at https://cushmanfoundation.allenpress.com/Portals/_default/SpecialPublications/sp31.pdf
page(s): p. 42 [details] Available for editors [request]
original description (of Bidentina Mikhalevich, 1988) Mikhalevich, V. I. (1988). The classification of the subclass Miliolata (Foraminifera). <em>Trudy Zoologicheskogo Instituta - Proceedings of the Zoological Institute, USSR Academy of Sciences, Leningrad.</em> 184: 77-110.
page(s): p. 92 [details] Available for editors [request]
basis of record Gross, O. (2001). Foraminifera, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 60-75 (look up in IMIS) [details]
additional source 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]
page(s): p. 298 [details]
original description (of Flintia Schubert, 1911) Schubert, R. J. (1911). Die fossilen Foraminiferen des Bismarckarchipels und einiger angrenzender Inseln. <em>Abhandlungen der geologischen Reichsanstalt in Wien.</em> 20: 1-130., available online at http://www.zobodat.at/pdf/AbhGeolBA_20_0001-0130.pdf
page(s): p. 124 [details]
original description (of Mikrobelodontos Loeblich & Tappan, 1994) Loeblich, A. R.; Tappan, H. (1994). Foraminifera of the Sahul Shelf and Timor Sea. <em>Cushman Foundation for Foraminiferal Research Special Publication.</em> 31: 1-661., available online at https://cushmanfoundation.allenpress.com/Portals/_default/SpecialPublications/sp31.pdf
page(s): p. 42 [details] Available for editors [request]
original description (of Bidentina Mikhalevich, 1988) Mikhalevich, V. I. (1988). The classification of the subclass Miliolata (Foraminifera). <em>Trudy Zoologicheskogo Instituta - Proceedings of the Zoological Institute, USSR Academy of Sciences, Leningrad.</em> 184: 77-110.
page(s): p. 92 [details] Available for editors [request]
basis of record Gross, O. (2001). Foraminifera, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 60-75 (look up in IMIS) [details]
additional source 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 ovate to fusiform in outline, with flattened sides and truncate periphery, microspheric proloculus followed by planispirally wound tubular second chamber of one whorl in length, later part of microspheric test and all of megalospheric test with chambers onehalf coil in length added in a single plane; wall calcareous, imperforate, porcelaneous; aperture at the open end of the final chamber, with simple or bifid tooth, commonly slightly produced on a short neck. U. Cretaceous (Santonian) to Holocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]Unreviewed
Habitat Known from seamounts and knolls [details]