CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia anfracta 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 -> Globorotalia -> Globorotalia anfracta
Other pages this level: G. acostaensis, G. acostaensis trochoidea, G. acrostoma, G. acrostoma partimlabiata, G. acutispira, G. adamantea, G. aequa bullata, G. africana, G. akersi, G. alamedillensis, G. albeari, G. almadenensis, G. amuria, G. andalusiana, G. anfracta, G. angulata abundocamerata, G. angulata kubanensis, G. angulata praepentacamerata, G. apanthesma, G. apertura, G. aragonensis, G. aragonensis araratica, G. aragonensis caucasica, G. aragonensis incisimarginata, G. aragonensis twisselmanni, G. archeomenardii, G. armenica, G. australiformis, G. avanensis, G. barisanensis, > >>

Globorotalia anfracta

Citation: Globorotalia anfracta Parker 1967
Rank: species
Type locality: Recent
Type sample and level: CHUB IV G, 0-3 cm. Lat. 13°35'N., long. 91°35'W., 119m; Pacific Ocean.
Holotype Repository: Washington; USNM
Type & figured specimens: USNM .643076.

Linked specimens: USNM-431241 USNM-643076 USNM-431247 USNM-643080 USNM-643077 USNM-643079 USNM-643081 USNM-431240 USNM-643078

Current identification/main database link: Dentigloborotalia anfracta (Parker, 1967)


Original Description
Test small, early part flattened on the evolute side, later chambers becoming increasingly convex, periphery rounded ; chambers subquadrate, inflated, increasingly so as added, 4-5½ in the final whorl, up to 13 in all, usually 10-11 in all; sutures narrow, depressed, curving; wall thin, smooth, translucent, finely perforate; aperture highly arched, often extending up onto the periphery, with a relatively broad lip.

Size: Diameter up to about 0.25 mm, usually smaller.

Extra details from original publication
Remarks: G. anfracta differs from G. scitula in the more broadly rounded periphery, more highly arched aperture, dorsally inflated later chambers, lack of ornamentation by secondary spines, and smaller size. This species is described from a Recent sample in which it is much more common than in the fossil core material. It is common also in plankton samples from the Gulf of California. The ancestry is not known, probably because of the elimination of many small species from the cores by solution of calcium carbonate. G. anfracta first occurs in the cores near the base of Zone N.21, but may be found lower in the section at some later time.

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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Globorotalia anfracta compiled by the pforams@mikrotax project team viewed: 18-2-2020

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