Foraminifera taxon details
Helicosteginopsis Caudri, 1975 †
722303 (urn:lsid:marinespecies.org:taxname:722303)
accepted
Genus
Helicostegina soldadensis Grimsdale, 1941 † accepted as Helicosteginopsis soldadensis (Grimsdale, 1941) † (type by original designation)
marine, brackish, fresh, terrestrial
fossil only
feminine
Caudri, C. M. B. (1975). Geology and paleontology of Soldado Rock, Trinidad (West Indies). Part 2. The larger foraminifera. <em>Eclogae Geologicae Helvetiae.</em> 68: 533-589., available online at https://www.e-periodica.ch/digbib/view?pid=egh-001:1975:68#613
page(s): p. 570 [details] Available for editors
[request]
page(s): p. 570 [details] Available for editors
[request]
Diagnosis Test small, lenticular, coiled throughout, simple chambers and septa in the first one or two whorls, then with relatively...
Diagnosis Test small, lenticular, coiled throughout, simple chambers and septa in the first one or two whorls, then with relatively large chambers resembling those of earlier whorls forming a single row just against the periphery of the preceding whorl, and numerous smaller arcuate chamberlets forming two or three rows just beneath the outer wall of the whorls, the latter resembling the later median chambers, no lateral chambers developed but may have meandrine prolongations of the chambers over the test axis, final stage with flangelike single layer of larger chamberlets; primary chambers interconnected by slitlike apertures with thickened rims, no countersepta. U. Eocene; Trinidad. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Helicosteginopsis Caudri, 1975 †. Accessed at: https://www.marinespecies.org/Foraminifera/aphia.php?p=taxdetails&id=722303 on 2026-01-09
Date
action
by
original description
Caudri, C. M. B. (1975). Geology and paleontology of Soldado Rock, Trinidad (West Indies). Part 2. The larger foraminifera. <em>Eclogae Geologicae Helvetiae.</em> 68: 533-589., available online at https://www.e-periodica.ch/digbib/view?pid=egh-001:1975:68#613
page(s): p. 570 [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. 570 [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 small, lenticular, coiled throughout, simple chambers and septa in the first one or two whorls, then with relatively large chambers resembling those of earlier whorls forming a single row just against the periphery of the preceding whorl, and numerous smaller arcuate chamberlets forming two or three rows just beneath the outer wall of the whorls, the latter resembling the later median chambers, no lateral chambers developed but may have meandrine prolongations of the chambers over the test axis, final stage with flangelike single layer of larger chamberlets; primary chambers interconnected by slitlike apertures with thickened rims, no countersepta. U. Eocene; Trinidad. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
Image from typetaxon