Foraminifera taxon details
Helicostegina Barker & Grimsdale, 1936 †
722302 (urn:lsid:marinespecies.org:taxname:722302)
accepted
Genus
Helicostegina dimorpha Barker & Grimsdale, 1936 † (type by original designation)
Eoconuloides Cole & Bermúdez, 1944 † · unaccepted > junior subjective synonym (Subjective junior synonym Opinion...)
Subjective junior synonym Opinion of Mitchell et al. (2022)
Helicolepidinoides Tan, 1936 † · unaccepted (Subjective junior synonym Opinion...)
Subjective junior synonym Opinion of Loeblich & Tappan, 1987
- Species Helicostegina dimorpha Barker & Grimsdale, 1936 †
- Species Helicostegina gyralis Barker & Grimsdale, 1936 †
- Species Helicostegina jamaicensis Mitchell, E. Robinson & Özcan in Mitchell et al., 2022 †
- Species Helicostegina jeannemairae E. Robinson, Mitchell & Özcan in Mitchell et al., 2022 †
- Species Helicostegina minor Mitchell, E. Robinson & Özcan in Mitchell et al., 2022 †
- Species Helicostegina polygyralis (Barker, 1932) †
- Species Helicostegina wellsi (Cole & Bermúdez, 1944) †
- Species Helicostegina soldadensis Grimsdale, 1941 † accepted as Helicosteginopsis soldadensis (Grimsdale, 1941) † (Type species of Helicosteginopsis)
marine, brackish, fresh, terrestrial
fossil only
feminine
Barker, R. W.; Grimsdale, T. F. (1936). A contribution to the phylogeny of the orbitoidal foraminifera, with descriptions of new forms from the Eocene of Mexico. <em>Journal of Paleontology.</em> 10: 231-247.
page(s): p. 233 [details] Available for editors
[request]
page(s): p. 233 [details] Available for editors
[request]
Diagnosis Test lenticular, early chambers in an involute trochospiral coil, later ones subdivided ventrally to form small chamberlets...
Diagnosis Test lenticular, early chambers in an involute trochospiral coil, later ones subdivided ventrally to form small chamberlets in early species or subdivided on both sides in later species, adult test with peripheral flange and arcuate chambers in annular series around the periphery of the juvenile stage; wall surface pustulose to papillose; aperture a narrow slit near the inner margin of the final chamber. M. to U. Eocene; Trinidad; Mexico. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Helicostegina Barker & Grimsdale, 1936 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=722302 on 2025-05-14
Date
action
by
original description
Barker, R. W.; Grimsdale, T. F. (1936). A contribution to the phylogeny of the orbitoidal foraminifera, with descriptions of new forms from the Eocene of Mexico. <em>Journal of Paleontology.</em> 10: 231-247.
page(s): p. 233 [details] Available for editors [request]
original description (of Helicolepidinoides Tan, 1936 †) Tan, S. H. (1936). Beitrag zur Kenntnis der Lepidocycliniden. <em>Proceedings Royal Academy of Sciences, Amsterdam - Verhandelingen der Koninklijke Akademie van Wetenschappen, Amsterdam.</em> 39(8): 990-999., available online at https://dwc.knaw.nl/DL/publications/PU00016963.pdf
page(s): p. 992 [details] Available for editors [request]
original description (of Eoconuloides Cole & Bermúdez, 1944 †) Cole, W. S.; Bermúdez, P. J. (1944). New foraminiferal genera from the Cuban middle Eocene. <em>Bulletins of American Paleontology.</em> 28: 333-344., available online at https://www.biodiversitylibrary.org/page/10679443
page(s): p. 340 [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]
page(s): p. 233 [details] Available for editors
[request]original description (of Helicolepidinoides Tan, 1936 †) Tan, S. H. (1936). Beitrag zur Kenntnis der Lepidocycliniden. <em>Proceedings Royal Academy of Sciences, Amsterdam - Verhandelingen der Koninklijke Akademie van Wetenschappen, Amsterdam.</em> 39(8): 990-999., available online at https://dwc.knaw.nl/DL/publications/PU00016963.pdf
page(s): p. 992 [details] Available for editors
[request]original description (of Eoconuloides Cole & Bermúdez, 1944 †) Cole, W. S.; Bermúdez, P. J. (1944). New foraminiferal genera from the Cuban middle Eocene. <em>Bulletins of American Paleontology.</em> 28: 333-344., available online at https://www.biodiversitylibrary.org/page/10679443
page(s): p. 340 [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 lenticular, early chambers in an involute trochospiral coil, later ones subdivided ventrally to form small chamberlets in early species or subdivided on both sides in later species, adult test with peripheral flange and arcuate chambers in annular series around the periphery of the juvenile stage; wall surface pustulose to papillose; aperture a narrow slit near the inner margin of the final chamber. M. to U. Eocene; Trinidad; Mexico. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
