Foraminifera taxon details
Silicosigmoilina Cushman & Church, 1929 †
578114 (urn:lsid:marinespecies.org:taxname:578114)
accepted
Genus
Silicosigmoilina californica Cushman & Church, 1929 † (type by original designation)
Bramletteia Israelsky, 1951 † · unaccepted (Subjective junior synonym in...)
Subjective junior synonym in opinion of Loeblich and Tappan (1987)
Silicosigmoilina (Bramletteia) Israelsky, 1951 † · unaccepted (Opinion of Takayanagi (1960))
- Species Silicosigmoilina abyssalica Inoue, 1980
- Species Silicosigmoilina akkeshiensis Yoshida, 1963 †
- Species Silicosigmoilina angusta Turenko, 1983 †
- Species Silicosigmoilina calcareoarenacea Shchedrina, 1984
- Species Silicosigmoilina californica Cushman & Church, 1929 †
- Species Silicosigmoilina compacta Serova, 1966 †
- Species Silicosigmoilina convexa Turenko, 1983 †
- Species Silicosigmoilina elegantissima Serova, 1966
- Species Silicosigmoilina explicata Turenko, 1983 †
- Species Silicosigmoilina futabaensis Asano, 1950 †
- Species Silicosigmoilina groenlandica (Cushman) emend Loeblich & Tappan, 1953
- Species Silicosigmoilina longa Serova, 1980 †
- Species Silicosigmoilina perplexa Israelsky, 1951 †
- Species Silicosigmoilina postfutabaensis Serova, 1980 †
- Species Silicosigmoilina seimensis Turenko, 1983 †
- Species Silicosigmoilina splendida Thompson, 1980 †
- Subgenus Silicosigmoilina (Bramletteia) Israelsky, 1951 † accepted as Bramletteia Israelsky, 1951 † accepted as Silicosigmoilina Cushman & Church, 1929 † (Opinion of Takayanagi (1960))
- Species Silicosigmoilina (Bramletteia) kushiroensis Yoshida, 1963 †
- Species Silicosigmoilina (Bramletteia) akkeshiensis Yoshida, 1963 † accepted as Silicosigmoilina akkeshiensis Yoshida, 1963 † (Opinion of Beckmann in Bolli et al. (1994))
- Species Silicosigmoilina (Bramletteia) perplexa Israelsky, 1951 † accepted as Silicosigmoilina perplexa Israelsky, 1951 † (unaccepted > superseded combination, Opinion of Loeblich and Tappan (1987))
- Species Silicosigmoilina rugosa (Mikhalevich, 1968) accepted as Miliammina rugosa Mikhalevich, 1968
marine, fresh, terrestrial
fossil only
feminine
Cushman, J. A.; Church, M. A. (1929). Some Upper Cretaceous Foraminifera from near Coalinga, California. <em>Proceedings of the California Academy of Sciences.</em> (4) 18 (16): 497-530.
page(s): p. 502 [details] Available for editors
[request]
page(s): p. 502 [details] Available for editors
[request]
Diagnosis Test ovoid in outline, proloculus followed by long narrow chambers a half coil in length, added slightly less than 180¡...
Diagnosis Test ovoid in outline, proloculus followed by long narrow chambers a half coil in length, added slightly less than 180¡ apart, so that in transverse section the chambers form a sigmoid series; wall finely agglutinated, surface smoothly finished; aperture rounded to ovate, with a small simple tooth projecting from one margin. U. Cretaceous to Paleocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Silicosigmoilina Cushman & Church, 1929 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=578114 on 2026-05-31
Date
action
by
original description
Cushman, J. A.; Church, M. A. (1929). Some Upper Cretaceous Foraminifera from near Coalinga, California. <em>Proceedings of the California Academy of Sciences.</em> (4) 18 (16): 497-530.
page(s): p. 502 [details] Available for editors [request]
original description (of Silicosigmoilina (Bramletteia) Israelsky, 1951 †) Israelsky, M. C. (1951). Foraminifera of the Lodo Formation, central California; General introduction and part 1, Arenaceous Foraminifera. <em>United States Geological Survey Professional Papers.</em> 240-A: 1-29., available online at https://pubs.er.usgs.gov/publication/pp240A
page(s): p. 10 [details] Available for editors [request]
page(s): p. 502 [details] Available for editors
[request]original description (of Silicosigmoilina (Bramletteia) Israelsky, 1951 †) Israelsky, M. C. (1951). Foraminifera of the Lodo Formation, central California; General introduction and part 1, Arenaceous Foraminifera. <em>United States Geological Survey Professional Papers.</em> 240-A: 1-29., available online at https://pubs.er.usgs.gov/publication/pp240A
page(s): p. 10 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test ovoid in outline, proloculus followed by long narrow chambers a half coil in length, added slightly less than 180¡ apart, so that in transverse section the chambers form a sigmoid series; wall finely agglutinated, surface smoothly finished; aperture rounded to ovate, with a small simple tooth projecting from one margin. U. Cretaceous to Paleocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
Image from typetaxon