CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinita bikiniensis McCulloch 1977
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Citation: Globigerinita bikiniensis McCulloch 1977Taxonomic rank: speciesType specimens: holotype (fig. 13), AHF 2577; paratype (fig. 14), AHF 2578.Type age (chronostrat): RecentType locality: In 860-1150 fms. on Velero Station 6000, 11°54N, 165°02E, off Bikini Atoll, South Pacific.Type repository: Los Angeles, Univ Southern California, Allan Hancock Foundation
Original Description Test free, calcareous, subcircular, equatorially trochospiral, biconvex, periphery lobulate opaque to slightly semihyaline; dorsal side evolute, almost flat presenting two whorls of subglobose in flated chambers some what appressed increasing slowly, gradually in size; sutures dorsally radial depressed spiral suture weakly lobulate; seven chambers in last formed whorl; ventral side involute umbilicus closed one whorl of six or seven chambers visible; sutures radial depressed; texture of chambers more hyaline, smoother; last formed chamber much in flated extended to cover umbilical area with min ute an gular mar ginal extensions observed at each sutural groove, no sup ple mentary, min ute apertures observed, primary aperture interiomarginal? and covered? Size: “Size. - Holotype (fig. 13) 0.187 x 0.144 x 0.09mm; paratype (fig. 14) 0.166 x 0.124 x 0.062mm. Extra details from original publication This species suggests Globigerinita parkerae Loeblich and Tappan, 1957, Gulf of Mexico. It differs from the above species in being smaller, less lobulate, more com pressed, and possible less coarsely perforate. The supplementary chambers at the margin of the umbilical extension of last formed chamber are not as sharply defined as expected. The test is not only minute but the umbilical extension in all three species described in this study seem to be rather tightly appressed at their margins.
References:
McCulloch, I. A. (1977). McCulloch, I. A. (1977). Qualitative observations on Recent foraminiferal tests with emphasis on the eastern Pacific (3 vols). University of Southern California, Los Angeles. -. University of Southern California, Los Angeles. -. gs
Globigerinita bikiniensis compiled by the pforams@mikrotax project teamviewed: 22-5-2025
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McCulloch 1977 pl175 f13.JPG
McCulloch 1977 pl175 f14.JPG
McCulloch 1977 pl175 f13.JPG
McCulloch 1977 pl175 f14.JPG
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