CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia pusilla laevigata Bolli, 1957

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 -> Globorotalia pusilla laevigata
Other pages this level: << < G. praenartanensis, G. praepseudomenardii, G. pseudochapmani, G. pseudocrassa, G. pseudomayeri, G. pseudomenardii, G. pseudomiocenica, G. pseudopachyderma, G. pseudoscitula, G. pseudoscitula elongata, G. pseudospinulosa, G. pshadae, G. pumilio, G. puncticulata padana, G. puncticulata puncticuloides, G. pusilla laevigata, G. pusilla mediterranica, G. pusilla pusilla, G. quadraria, G. quadrata, G. quetra, G. quinifalcata, G. redbankensis, G. reissi, G. renzi, G. rex, G. saginata, G. saheliana, G. salisburgensis, G. saphoae, > >>

Globorotalia pusilla laevigata

Citation: Globorotalia pusilla laevigata Bolli, 1957
Rank: sub-species
Type locality: Globorotalia pseudomenardii zone. Lizard Springs formation. Trinidad
Type age: Globorotalia pseudomenardii Zone,
Holotype Repository: Washington; USNM
Type & figured specimens: Holotype (USNM P5065) from northeast bank of Tank Farm at the old Club Site, Pointe-a-Pierre, Trinidad (coordinates N:256950 links; E:380000 links), sample K. 10832 (TLL 228674).

Linked specimens: USNM-5065

Current identification/main database link: Igorina albeari (Cushman and Bermudez 1949)


Original Description
Shape of test low trochospiral, biconvex, compressed; equatorial periphery circular, slightly lobate; axial periphery acute, last chambers often with a faint keel. Wall calcareous, perforate, surface smooth. Chambers strongly compressed; 12-16, arranged in about 3 whorls;
the 5-6 chambers of the last chamber increasing moderately in size. Sutures on spiral side strongly curved; on umbilcal side radial. Umbihcus narrow, open. Aperture a low arch; interiomarginal, extraumbilical-umbilical.

Size: Largest diameter of holotype 0.28 mm.

Extra details from original publication
Remarks: Globorotalia pusilla laevigata Bolli, new species, new subspecies, is closely related to G. pusilla pusilla Bolli, new species, new subspecies, from which it develops. The subspecies laevigata is distinguished from the subspecies pusilla by its more circular outline
and acute axial periphery and by its spiral sutures not being depressed.

References:

Bolli, H. M. (1957d). The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad. In, Loeblich, A. R. , Jr. , Tappan, H. , Beckmann, J. P. , Bolli, H. M. , Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin. 215: 61-82. gs

Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs


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Globorotalia pusilla laevigata compiled by the pforams@mikrotax project team viewed: 18-10-2019

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