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Foraminifera taxon detailsRotorbinella bikiniensis McCulloch, 1977
 763916 (urn:lsid:marinespecies.org:taxname:763916)
accepted
Species
marine,
McCulloch, I. (1977). Qualitative observations on Recent foraminiferal tests with emphasis on the eastern Pacific. University of Southern California. Los Angeles., available online at https://books.google.com/books?id=tPw_AAAAIAAJ [details] Available for editors
 [request]
Original description Test free, calcareous, unequally biconvex, trochoid in organization, marginate, slightly lobulate; spiral surface in form of...
Original description Test free, calcareous, unequally biconvex, trochoid in organization, marginate, slightly lobulate; spiral surface in form of a rather low cone showing three and a half whorls on dorsal evolute side early or initial chambers small, compact, embedded in hyaline shell; last formed whorl with six or seven uninflated hyaline chambers, smooth and finely perforated; sutures dorsally radiate, flush initially, oblique, flush to depressed peripherally; ventral surface involute, weakly convex, one whorl of six or seven slightly inflated chambers surrounding closely or otherwise a prominent, flattened hyaline umbilical boss; inner edges of ventral chambers recessed at sutures leaving openings into test at margin of the umbilical area, wall finely perforate, smooth, hyaline; sutures ventrally radiate, depressed; primary aperture along inner edge of last formed chamber. Size, Fig. 15: .332 x .290 x .249 rnrn. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Rotorbinella bikiniensis McCulloch, 1977. Accessed at: https://www.marinespecies.org/Foraminifera/aphia.php?p=taxdetails&id=763916 on 2025-05-19
Date action by
original description
McCulloch, I. (1977). Qualitative observations on Recent foraminiferal tests with emphasis on the eastern Pacific. University of Southern California. Los Angeles., available online at https://books.google.com/books?id=tPw_AAAAIAAJ [details] Available for editors
[request] Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Original description Test free, calcareous, unequally biconvex, trochoid in organization, marginate, slightly lobulate; spiral surface in form of a rather low cone showing three and a half whorls on dorsal evolute side early or initial chambers small, compact, embedded in hyaline shell; last formed whorl with six or seven uninflated hyaline chambers, smooth and finely perforated; sutures dorsally radiate, flush initially, oblique, flush to depressed peripherally; ventral surface involute, weakly convex, one whorl of six or seven slightly inflated chambers surrounding closely or otherwise a prominent, flattened hyaline umbilical boss; inner edges of ventral chambers recessed at sutures leaving openings into test at margin of the umbilical area, wall finely perforate, smooth, hyaline; sutures ventrally radiate, depressed; primary aperture along inner edge of last formed chamber. Size, Fig. 15: .332 x .290 x .249 rnrn. [details]
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