CATALOG OF ORIGINAL DESCRIPTIONS: Globanomalina praepumilio Parker 1967

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 -> Globanomalina -> Globanomalina praepumilio
Other pages this level: G. laccadivensis, G. ovalis, G. ovalis lakiensis, G. praepumilio, G. rakhiensis, G. simplex, G. simplex orbicularis, G. wilcoxensis globulosa,

Globanomalina praepumilio

Citation: Globanomalina praepumilio Parker 1967
Rank: species
Type locality: DOD0 117 P, 164-166 cm. Lat. 18°21'S., long 62°04'E., 3398 m; Indian Ocean.
Type age: Upper Pliocene, Banner and Blow Zone N.21.
Holotype Repository: Washington; USNM
Type & figured specimens: USNM No. 642982.

Linked specimens: USNM-642985 USNM-642983 USNM-642984 USNM-431246 USNM-642982

Current identification/main database link:


Original Description
Test small, planispiral or slightly asymmetrical, partially involute, with a rounded periphery; chambers increasing in size and inflation gradually as added, 5½  to 8 in the final whorl, usually 6 or 7, about 15 in all; sutures slightly curving, somewhat depressed, especially the later ones, narrow; wall thin, smooth, often somewhat translucent, finely perforate; aperture a narrow, short, curved opening at the periphery, sometimes slightly asymmetrical in position, with a narrow lip.

Size: Specimens up to 0.12 mm in diameter.

Extra details from original publication
Remarks: This species was found in two cores; in DODO 117 P it occurs in the upper part of Zone N.20 and in N.21 ; in DODO 57 P it is found in one sample from Zone N.21. It appears to give way to G. (?) pumilio,but this evolution has not been definitely established. Many small forms have not yet been described, partly because they are not sufficiently striking to be easily identified. This species, however, is easily differentiat- ed in well-preserved material. Unfortunately, in the Pacific and Indian Oceans well-preserved material of this age is comparatively rare. Eventually this species may be found to range lower in the section, and its ancestry may be discovered. It shows little variation, aside from the number of chambers in the final whorl and the width of the aperture. It differs from G. ovalis in being less trochoid, in its peripheral aperture which does not extend to the umbilicus, and in its smaller size.

References:

Parker, F. L. (1967). Late Tertiary biostratigraphy (planktonic foraminifera) of tropical Indo-Pacific deep-sea cores. Bulletins of American Paleontology. 52(235): 115203-. gs


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Globanomalina praepumilio compiled by the pforams@mikrotax project team viewed: 23-1-2020

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