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-219457
Current identification/main database link: Tenuitella gemma (Jenkins 1966)
Original Description
Between the ultimate and the penultimate chamber,the suture is about 8 microns wide. The outline, as seen in dorsal and ventral view, is lobate. The subglobular chambers are somewhat flattened on the dorsal and convex on the ventral side, and pointed toward the small umbilicus. The aperture is a very small, low, umbilical-extraumbilical arch, which does not reach the periphery of the test. It is similar to that of Globorotalia (T.) nkbrowni Brönnimann and Resig, n. sp. It is provided with a slightly protruding, small plate-like lip with coarsely pustulate margin. Aperture and lip are shown in detail by the scanning micrographs, Plate 42, Figures 4, 6, 7 and 9. The calcareous wall is perforate and the surface is strongly pustulate. The scanning micrograph of the umbilical side of the holotype exhibits relatively large pores of 2 to 3 microns in diameter which are surrounded by numerous minute pustules. From this minutely pustulate surface protrude irregularly distributed much larger, blunt to pointed pustules of 5 to 9 microns in diameter. These larger pustules are composite formations. Some of the larger pustules may fuse and develop short, more or less continuous ridges as shown by the scanning micrograph of a paratype, Plate 42, Figure 1.
Size:
Extra details from original publication
Paratypes from Hole 64.1, Core 7, Section 2 range in maximum diameter from about 100 to 175 microns.
Most of them coil to the right.
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Globorotalia (Turborotalia) cifellii compiled by the pforams@mikrotax project team viewed: 12-5-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=131011 Go to Archive.is to create a permanent copy of this page - citation notes |
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