CATALOG OF ORIGINAL DESCRIPTIONS: Guembelina marshallana Todd, in Cushman et al. 1954
This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Citation: Guembelina marshallana Todd, in Cushman et al. 1954Taxonomic rank: speciesType specimens: USNM no. 548727Type age (chronostrat): Probably Lower Tertiary. Type locality: Marshall Islands, Bikini Atoll In core from 5 to 7 inches below the surface of the sea- bottom, taken at a depth of 720 fathoms , on t he inner part of t he neck connecting Sylvania Guyot with the base of the outer slope of Bikini Atoll, at lat. 11°44'47" N. , long. 165°9' 56" E. , about 7 miles northwest of Bikini Atoll, Marshall Islands. Found throughout the same cor e , which was 7 inches in length. Type repository: Washington, USNM
Original Description Test small, slender, somewhat compressed, periphery rounded, very slightly indented; chambers few, distinct, six to eight pairs comprising the test, rapidly increasing in size as added; sutures distinct, depressed; wall finely perforate; aperture a high, narrow slit extending from the suture in to the face of the last-formed chamber. Size: Length 0.23 to 0.30 mm. ; breadth 0.13 to 0.15 mm. ; thickness 0.07 to 0.10 mm. Extra details from original publication 'This species closely resembles Gümbelina cubensis Palmer from the Oligocene of Cuba and adjacent areas, but differs in its slenderer test, slightly less inflated chambers , and its high aperture, elongated in the plane of the test. This genus has not previously been known from sediments younger than Oligocene. This form is questionably placed in this genus because of the type of aperture, which resembles that characteristic of Bolivina d ' Orbigny, 1839, although it is not unknown in the genus Gümbelina Egger , 1900.
This species may have its origin in fossil, rather than Recent , sediments. The unique faunal composition ofthe core Bikini 1176 suggests that a submarine outcrop of Tertiary sediments higher on the atoll slope might have shed debris down the slope of the atoll. Editors' Notes From USNM catalog: Type Citations: Todd. 1954. U.S.Geol.Survey Prof.Paper. (n.260-h): 349.
References:
Cushman, J. A., Todd, R. & Post, R. J. (1954). Recent foraminifera of the Marshall islands. U.S. Geological Survey, Professional Paper. 260-H: -. gsO
Guembelina marshallana compiled by the pforams@mikrotax project teamviewed: 17-11-2025
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Cushman et al 1954 pl87 f9.JPG
Cushman et al 1954 pl87 f9.JPG
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