Catalog - Globorotaloides suteri relizensis Catalog - Globorotaloides suteri relizensis

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotaloides suteri relizensis Bandy, Ingle, & Wright 1971

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 -> Globorotaloides -> Globorotaloides suteri relizensis
Other pages this level: G. atlanticus, G. carcoselleensis, G. eovariabilis, G. falconarae, G. indigena anavenezuelana, G. indigena redissimilis, G. parvulus anasuteri, G. parvulus lateraliaperturus, G. quadrocameratus, G. suteri, G. suteri relizensis, G. trema, G. variabilis

Globorotaloides suteri relizensis

Citation: Globorotaloides suteri relizensis Bandy, Ingle, & Wright 1971
taxonomic rank: sub-species
Type specimens: The holotype has been deposited in the U. S. National Museum, Washington, D. C.; paratypes are on fiIe in the micropaleontology laboratory of the University of Southern California.
Type age (chronostrat): lower Relizian “Siphogenerina” hughesi Zone of Kleinpell (1938) which is lower middle Miocene, equivalent to Neogene zones 9 or 10 of Banner and Blow (1965).
Type locality: Adelaide Quadrangle, Salinas Valley, Peachy Canyon Road, 1.6 miles north of Summit School; California, USA
Type repository: Washington, USNM

Current identification:


Original Description

The test consists ofabout 15 or 16 chambers coiled in a low trochospire with about 4½ chambers in the final whorl. There is no evidence of a bulla. The chambers are moderately embracing; intercameral sutures are distinct and moderately incised. The ventral intercameral sutures are essentially radial; dorsal intercameral sutures are oblique and curved in the earlier part of the test becoming nearly radial between the last two or three chambers. Umbilicus open and deep. Apcrture of the final chamber a moderately low arched opening, interiomarginal, mostly umbilical in position; apertures of earlier chambers are more extraumbilical in position. The aperture does not possess any distinct lip or rim. The wall is calcareous, radial hyaline and it is coarsely perforate with the pores opening into distinct pore pits.

Size:
Maximum diameter of holotype is 0.25 mm.

Extra details from original publication
Remarks: G. suteri relizensis occasionally shows a partial or nearly complete bulla or adventitious chamber partially covering the umbilicus. It differs from G.suteri suteri Bolli (1957) in having essentially no development of a lip and in usually lacking a bulla. In the lower Relizian both sinistral and dextral specimens occur.

Stratigraphic range: G. suteri relizensis ranges from Saucesian (lower Miocene) to the lower Reliian Stage (middle Miocene) of California. Its lower limit appears to be no lower than perhaps Neogene zone 7 of Banner and Blow (1965) and Blow (1969) in view of its absence in Neogene zone 6 in upper lower Saucesian (Bandy, Morin, and Wright, 1969). Its upper limit appears to be no higher than about Neogene zone 9 or perhaps 10, in view of its apparent absence in the upper Relizian of California (Bandy and Ingle, 1970).

References:

Bandy, O. L., Ingle, J. C. & Wright, R. C. (1971). Globorotaloides suteri Bolli subspecies relizensis n. subsp. Journal of Foraminiferal Research. 1: 15,16-. gs


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Globorotaloides suteri relizensis compiled by the pforams@mikrotax project team viewed: 26-5-2024

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