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.
Linked specimens: USNM-640996 USNM-640997
Current identification/main database link: Globoturborotalita cancellata (Pessagno, 1963)
Test trochospiral; spiral side slightly convex; periphery somewhat lobulate and well rounded. Wall radial, hyaline, perforate with surface cancellate. Cancellate ornamentation consisting of polygonal frames (usually hexagonal or pentagonal). Oval pores set deep within centersofframes (text-figure 2). Chambers spherical initially,becoming laterally compressed in last whorl. Four chambers in last whorl increasing rapidly in size. Sutures of spiral side radial to oblique. Sutures on umbilical side radial and depressed. Umbilicus small and deep. Aperture a large, round opening; interio-marginal, umbilical, often with a rim (holotype). Direction of coiling (sinistral or dextral) random.
Original Description
Size: Maximum diameter of holotype: 0.35mm.
Maximum diameter of other specimens : 0.44mm.
Extra details from original publication
Remarks: G.ampliapertura cancellata n. subsp. differs from G. ampliapertura s. s. Bolli in its somewhat more convex spiral side and in its markedly cancellate surface.
Occurrence: In Puerto Rico this species occurs in the upper part of the Juana Diaz formation.
Pessagno, E. A. (1963). Planktonic foraminifera from the Juana Díaz Formation, Puerto Rico. Micropaleontology. 9: 53-60. gs Spezzaferri, S., Olsson, R. K., Hemleben, C., Wade, B. S. & Coxall, H. K. (2018d). Taxonomy, biostratigraphy, and phylogeny of Oligocene and Lower Miocene Globoturborotalita. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 46(Chap 8): 231-268. gs V OReferences:
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Globigerina ampliapertura cancellata compiled by the pforams@mikrotax project team viewed: 2-3-2021
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