CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina woodi subsp. connecta Jenkins 1964

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 woodi connecta
Other pages this level: << < G. uruchaensis, G. utilisindex, G. varianta, G. velascoensis, G. velascoensis compressa, G. venezuelana, G. vignalii, G. voluta, G. wagneri, G. washitensis, G. weissi, G. wilsoni, G. wilsoni bolivariana, G. winkleri, G. woodi, G. woodi connecta, G. woodi extrema, G. yeguaensis, G. yeguaensis pseudovenezuelana, G. zealandica, G. neoparawoodi,

Globigerina woodi connecta

Citation: Globigerina woodi subsp. connecta Jenkins 1964
Rank: sub-species
Type locality: Parengarenga section, North Auckland
Type age: Otaian Stage.
Type sample and level: sample N2j554, F 14851
Holotype Repository: Lower Hutt; NZ Geol Survey
Type & figured specimens: Text-figure 1 a-c; Holotype in the collections of the New Zealand Geological Survey, no. TF 1483.

Current identification/main database link: Globoturborotalita connecta (Jenkins, 1964)


Original Description
Test a compact trochospiral, equatorial periphery trilobate, axial periphery rounded. Wall calcareous, perforate, coarsely pitted. Initial whorls indistinct due to the thickening of the test wall, about 10-12 chambers arranged in 2- 3 whorls, free parts of the chambers spherical in outline, increasing slowly in size, with the final chamber tending to overlap slightly upon the previous chambers. Aperture a low arch with a liplike margin.

Size: Greatest diameter of holotype: 0.34 mm.

Extra details from original publication
Remarks: Globigerina woodi connecta differs from Globigerina woodi woodi in having a much lower arched aperture and a more compact test. There are intermediate forms joining the two subspecies within the range of G. woodi connecta. The separation of G. woodi connecta from the forms assigned to Globigerinoides trilobus is more easily made, the difference being that the latter species has a supplementary aperture on the spiral side at the inner margin of the final chamber. All three forms have identical wall ornamentation.

G. woodi connecta evolved from the G. woodi woodi populations in the lower part of the Otaian Stage in New Zealand and in the G. woodi zone in southeast Australia (Jenkins, 1960). From the evidence of the ranges of the other· planktonic foraminifera, it appears that this evolution occurred at about the same time in the two areas. In terms of Trinidad zones, the lower Otaian is equivalent to the lower part of the Globorotatia kugleri zone or slightly earlier (Jenkins, MS.b).

Stratigraphic range: Otaian - Awamoan (Lower Miocene).

References:

Jenkins, D. G. (1964). A new planktonic foraminiferal subspecies from the Australasian Lower Miocene. Micropaleontology. 10(1): 72-. gs

Spezzaferri, S., Olsson, R. K., Hemleben, C., Wade, B. S. & Coxall, H. K. (2018c). 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


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Globigerina woodi connecta compiled by the pforams@mikrotax project team viewed: 31-3-2020

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