CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinatella insueta Cushman & Stainforth 1945

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 -> Globigerinatella -> Globigerinatella insueta
Other pages this level: G. insueta

Globigerinatella insueta

Citation: Globigerinatella insueta Cushman & Stainforth 1945
Rank: species
Type locality: Sample Rz. 108, Trinidad Leaseholds Catalogue No. 21743, Trinidad Government Cadastral coordinates N 229,450 links, E 354,250 links, situated on the "Cipero nose," along the coast between the mouth of the Cipero River and the point at which the Trinidad Government railway turns inland, south of San Fernando, Trinidad.
Type specimens: no. 44040.
Type repository: USNM

Linked specimens: USNM-44040 USNM-44042 USNM-44043 USNM-44041 USNM-44042 USNM-44043 USNM-44043

Current identification/main database link: Globigerinatella insueta Cushman & Stainforth 1945


Original Description
"Test in the adult spherical, in the early stages trochoid; chambers increasing rapidly in size as added, in the early stages often with a linear series of rounded, raised areas along and close to the sutures, in later adult stages with elongate, supplementary chambers covering the earlier sutures; wall finely cancellated; apertures in the adult small, semicircular, along both margins of the supplementary chambers and rather evenly spaced. Diameter 0.35-0.50 mm.

"This species and its genus form a unique development in this family [Globigerinidae] and were evidently a specialized development that did not persist to the Recent oceans."

Size: Diameter 0.35-0.50 mm.

Extra details from original publication
TYPE LEVEL: Middle to Upper Oligocene, Cipero formation, Zone II (Globigerinatella insueta zone), light-colored marls stratigraphically some 350 feet above the rich orbitoidal bed in the "Bamboo Clay" to the north.

References:

Bolli, H. M., Loeblich, A. R. & Tappan, H. (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. 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: 3-50. gs V O

Cushman, J. A. & Stainforth, R. M. (1945). The foraminifera of the Cipero Marl Formation of Trinidad, British West Indies. Cushman Laboratory for Foraminiferal Research, Special Publication. 14: 1-75. gs


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Globigerinatella insueta compiled by the pforams@mikrotax project team viewed: 23-7-2021

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