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Linked specimens: USNM-239940 USNM-239939 USNM-207229
Current identification/main database link: Globorotalia scitula (Brady, 1882)
Test free, small, biconvex, about 14 subglobular chambers arranged in a low trochospire of about three whorls, 4½ to 5 chambers in the final whorl. Chambers increasing gradually in size with growth, partially embracing, slightly inflated on the spiral side, moderately inflated on the umbilical side. Equatorial periphery lobulate; axial profile moderately biconvex, the final chamber more ventrally inflated than the earlier chambers. No true carina present, although the acutely rounded peripheral edges of the chambers are imperforate. Intercameral sutures on both spiral and umbilical sides simple and curved; spiral suture slightly lobulate. Aperture interiomarginal, umbilical-extraumbilical, a symmetrical arch of moderate height at the base of the strong umbilical shoulder, bordered by an imperforate apertural rim. Wall calcareous, perforated with large pores, the pores concentrated mostly on the spiral side away from the test margin; pore diameter variable, with a tendency to be larger on the early whorls; pore shape subcircular. Surface shiny, translucent, sparsely and irregularly pustulate, the isolated pustules mostly on the umbilical side of the early chambers in the final whorl. Coiling is almost invariably dextral.
Size: Maximum observed diameter 0.2 mm
Etymology: The species is named in honor of the late Dr. William E. Wiles of the Department of Geology, Rutgers University.
Extra details from original publication
Occurrence: This species has been observed mostly in the North Pacific between latitudes 24 and 45°N, less commonly in the South Pacific between latitudes 17 and 40°S, and rarely in the Indian Ocean and Caribbean. The geologic range observed by Parker (1964) at the Guadalupe site is approximately Pliocene to recent. At DSDP Site 435, it occurs sporadically down to Section 435A-5-3 (Plate 4, Figures 3a, b). At this level, the periphery is conspicuously more acute and the umbilical shoulder more inflated than in younger sediments, suggesting an early Pliocene base of the range.
Globorotalia wilesi compiled by the pforams@mikrotax project team viewed: 12-4-2021
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