Taxonomy
Original description: Shape of test. Small, trochospiral, spiral side slightly to distinctly convex, equatorial periphery lobate. Wall. Calcareous, finely perforate. The specimens found in the Cuche and Toco formations are invariably pyritized. Chambers. Spherical in early stage, may become slightly compressed laterally in the last whorl; about 10 arranged in 2 1/2 whorls, the usual four chambers in the last whorl increase fairly rapidly in size. Sutures. On spiral and umbilcal side radial, depressed. Umbilicus. Fairly small. Aperture. A distinct, fairly high arch, often with a rim; interiomarginal, umbilical. Coiling. Random.
Entries in the Catalog of original descriptions: Globigerina kugleri
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Spiroconvex | aperture: | Umbilical |
sp chamber shape: | Globular | coiling axis: | Low-moderate | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | None |
spiral sutures: | Moderately depressed | umb depth: | Shallow | wall texture: | Smooth | shell porosity: | - |
umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 4-4 | N.B. These characters are used for advanced search. N/A - not applicable |
Geological Range:
Last occurrence (top): within G. algerianus zone (116.86-118.24Ma, top in Aptian stage). Data source: Banner et al., 1997
First occurrence (base): within G. blowi zone (120.55-124.40Ma, base in Barremian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
Bolli, H. M. (1959c). Planktonic foraminifera from the Cretaceous of Trinidad, B. W. I. Bulletins of American Paleontology. 39(179): 253-277. gsReferences:
Gorbachikella kugleri compiled by the pforams@mikrotax project team viewed: 7-12-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=110208 Go to Archive.is to create a permanent copy of this page - citation notes |
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