CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia (Turborotalia) pseudokugleri Blow 1969

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 -> Globorotalia (Turborotalia) -> Globorotalia (Turborotalia) pseudokugleri
Other pages this level: << < G. (Turborotalia) longiapertura, G. (Turborotalia) mendacis, G. (Turborotalia) nkbrowni, G. (Turborotalia) oceanica, G. (Turborotalia) palpebra, G. (Turborotalia) parkerae, G. (Turborotalia) peripheroacuta, G. (Turborotalia) peripheroronda, G. (Turborotalia) permicra, G. (Turborotalia) planispira, G. (Turborotalia) pliocenica, G. (Turborotalia) praecentralis, G. (Turborotalia) praeoscitans, G. (Turborotalia) pseudoimitata, G. (Turborotalia) pseudoinconstans, G. (Turborotalia) pseudokugleri, G. (Turborotalia) pseudopumilio, G. (Turborotalia) quadrilocula, G. (Turborotalia) rainwateri, G. (Turborotalia) riedeli, G. (Turborotalia) rikuchuensis, G. (Turborotalia) tosaensis tenuitheca, G. (Turborotalia) transsylvanica, G. (Turborotalia) variospira,

Globorotalia (Turborotalia) pseudokugleri

Citation: Globorotalia (Turborotalia) pseudokugleri Blow 1969
Rank: species
Type locality: From the south bank of the San Fernando Bypass Road, approximately 240 feet northeast from the north end of the road bridge across the Siparia railway line, coordinates N: 225700 links, E: 361900 links, Trinidad [fide Bolli 1957, op. cit. p. 100] ; and paratypes (pl. 39, figs. 5, 6) from the Cipero Formation opposite milepost 38 at Mosquito Creek, southern Trinidad, West Indies.
Type age: Oligocene, Globorotalia kugleri Zone
Type sample and level: Cipero Formation
Holotype Repository: USNM;
Type & figured specimens: Holotype: P 5665 Paratype: PM P 49740: Holotype (pl. 10, figs. 4-6); figured paratypes (pl. 39, figs, 5, 6) in NHM, London,UK.

Linked specimens: London, UK; NHM (5665) London, UK; NHM (49740) USNM-5665

Current identification/main database link: Paragloborotalia pseudokugleri (Blow, 1969)


Original Description
Test small with 15-16 chambers arranged in a low trochospire and with 7 chambers in the final whorl. Chambers inflated both dorsally and ventrally, test very nearly equally biconvex but with a smoothly rounded, broad, not sub-acute, peripheral margin. Chambers, as seen in dorsal aspect, nearly equally dimensional, sub globular and with nearly radial dorsal intercameral sutures. Spiral and dorsal intercameral sutures, depressed incised and distinct. Umbilicus, open and deep but not a sharply defined pit as in Globorotalia (T.) kugleri. Umbilical-ventral shoulders of the chambers do not dip sharply into the umbilicus but are smoothly and gently rounded into the umbilical depression. Ventral intercameral sutures are radial, moderately incised but distinct. Aperture, a low but long slit-like opening with a distinct lip, interiomarginal, umbilical-extraumbilical. Wall calcareous, perforate but without distinct pore-pits, not strongly pustulose and quite smooth over the  later parts of the test.

Size: Maximum diameter of holotype 0.31 mm.

Extra details from original publication
The figured paratype shows that G. (T.) pseudokugleri has a densely and a comparatively coarsely perforate wall structure but without distinct pore-pits. Some pustules occur over the earlier parts of the test but these are much less strongly developed in G (T) mendacis. G. (T.) pseudokugleri differs from both G (T) mendacis and G. (T.) kugleri in having radial dorsal intercameral sutures with subglobular, inflated chambers as seen in dorsal aspect. G (T) pseudokugleri differs from G. (T.) mendacis in having a wider umbilical depression and a broad, completely rounded not subacute peripheral margin. G. (T.) pseudokugleri differs from G. (T ) kugleri in not having a flat dorsal surface to the test but in having inflated, subglobular chambers with radial dorsal intercameral sutures.

References:

Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E J Brill, Leiden 380-381. gs

Leckie, R. M. et al. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene and Lower Miocene Paragloborotalia and Parasubbotina. 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 5): 125-178. gs


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Globorotalia (Turborotalia) pseudokugleri compiled by the pforams@mikrotax project team viewed: 8-12-2019

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