Catalog - Globigerina patagonica

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina patagonica Todd & Kniker 1952

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.


Higher levels: pf_cat -> G -> Globigerina -> Globigerina patagonica
Other pages this level: << < G. orbiformis, G. ouachitaensis, G. ouachitaensis gnaucki, G. ouachitaensis senilis, G. ovoidea, G. oxfordiana, G. panormensis, G. parabulloides, G. paradubia, G. paraobesa, G. paratriloculinoides, G. paravenezuelana, G. parisiensis, G. partidiana, G. parva, G. patagonica, G. pauciloculata, G. pera, G. picassiana, G. pileata, G. planispira, G. planoexilis, G. polusi, G. portsdownensis, G. postcretacea, G. posttriloculinoides, G. posttriloculinoides clinata, G. praebulloides, G. praebulloides leroyi, G. praebulloides occlusa, G. praebulloides pseudociperoensis> >>

Globigerina patagonica

Citation: Globigerina patagonica Todd & Kniker 1952
Rank: Species
Type locality: Magellanes Province, S. Chile
Type age (chronostrat): Eocene
Type sample (& lithostrat): Upper Agua Fresca Fm.; sample Shaw 1934
Type specimens: 64483; pl4 fig 32
Type repository: Washington; USNM
Described on page(s) : 26

Linked specimens: USNM-64484 USNM-64483 USNM-64484

Current identification/main database link: Subbotina patagonica (Todd and Kniker 1952)


Original Description
Test small for the genus, composed for the most part of 3 last-formed chambers, the last one comprising about half the test, earlier chambers visible in a small, low spire; chambers globular, increasing very rapidly in size as added; sutures deeply depressed; wall thin, finely cancellated; aperture single, ventral a high, arched, slightly rimmed opening projecting into the last chamber.

Size: Length 0.35-0.42 mm.; thickness 0.25-0.30 mm

Extra details from original publication
This species differs from Globigerina bulloides d'Orbigny in having 3 chambers comprising the last whorl, in its cancellated instead of spinose wall, and its high arched aperture which may be even elongated in some specimens.

This species is common to abundant throughout the Agua Fresca formation, more abundant in the upper than in the lower part of well P-7.

References:

Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (2006a). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 41(Chap 6): 111-168. gs V O

Todd, R. & Kniker, H. T. (1952). An Eocene foraminiferal fauna from the Agua Fresca shale of Magallanes Province, southernmost Chile. Cushman Foundation for Foraminiferal Research, Special Publication. no. 1: 1-28. gs V O

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Globigerina patagonica compiled by the pforams@mikrotax project team viewed: 20-9-2021

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