pforams@mikrotax - Gorbachikella kugleri pforams@mikrotax - Gorbachikella kugleri

Gorbachikella kugleri


Classification: pf_mesozoic -> Praehedbergellidae -> Gorbachikella -> Gorbachikella kugleri
Sister taxa: G. depressa, G. grandiapertura, G. kugleri, G. neilii, G. sp.

Taxonomy

Citation: Gorbachikella kugleri (Bolli, 1959)
taxonomic rank: Species
Basionym: Globigerina kugleri

Type images:

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:Lobatechamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical
sp chamber shape:Globularcoiling axis:Low-moderateperiphery:N/Aaperture border:Thin lip
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Smoothshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4-4 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within T. rohri (-Ma, top in "Holocene" stage). Data source: copied from Chronos database, but zonal name updated from T. bejaouaensis to T. rohri
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:

References:

Bolli, H. M. (1959c). Planktonic foraminifera from the Cretaceous of Trinidad, B. W. I. Bulletins of American Paleontology. 39(179): 253-277. gs


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Gorbachikella kugleri compiled by the pforams@mikrotax project team viewed: 30-5-2024

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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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