CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia (Globorotalia) quasimiocenica Belford 1984

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) -> Globorotalia (Globorotalia) quasimiocenica
Other pages this level: G. (Globorotalia) crassula viola, G. (Globorotalia) cultrata exilis, G. (Globorotalia) hirsuta praehirsuta, G. (Globorotalia) ichinosekiensis, G. (Globorotalia) iwaiensis, G. (Globorotalia) merotumida, G. (Globorotalia) paralenguaensis, G. (Globorotalia) praefohsi, G. (Globorotalia) quasimiocenica, G. (Globorotalia) truncatulinoides pachytheca, G. (Globorotalia) tumida lata, G. (Globorotalia) tumida plesiotumida,

Globorotalia (Globorotalia) quasimiocenica

Citation: Globorotalia (Globorotalia) quasimiocenica Belford 1984
Rank: Species
Type locality: sample F.432, Kindan section. locality lOO. Wabag 1:250000 Sheet area, Papua New Guinea
Type age: Late Miocene, not older than planktonic to G. (H.) scitula planaria subsp. nov., and may be zone N.17.
Holotype Repository: Canberra, Australia; Commonwealth Palaeontological Collection
Type & figured specimens: Holotype (CPC 22032) and paratypes A to C (CPC 22033 to 22035)

Current identification/main database link:


Original Description
Diagnosis: A large, moderately compressed species of Globorotalia with flat or very slightly convex dorsal surface. convex ventral surface, 6-7 chambers in the last whorl, curved. raised dorsal sutures, and narrow depressed radial ventral sutures.

Description: Test large, trochoid. dorsal surface flat or only slightly convex. ventral surface strongly convex. Outline of test circular, equatorial periphery slightly lobate. axial periphery narrow with thick imperforate keel. Chambers increasing only slowly in size, usually 7 chambers visible from ventral side. some specimens with only 6 chambers. Dorsal sutures thickened and raised near periphery, becoming smooth near spiral suture, curved and reflexed; ventral sutures narrow, depressed, straight or slightly curved, radial. Test wall finely perforate. surface of test smooth. Aperture interiomarginal, umbilical-extraumbilical, an elongate low opening, on some specimens with a narrow lip.

Size: holotype max diameter 0.66mm

Etymology: Prefixed by the Latin quasi, appearing as if, simulating, referring to the similarity with the species miocenica.

Extra details from original publication
Remarks: G. (G.) quasimiocenica sp. novo resembles G. (G.) pseudomiocenica Bolli & Bermudez, 1965 in its flat dorsal surface, but G. (G.) quasimiocenica is more compressed with more chambers per whorl. and the equatorial periphery is less lobate. G. (G.) quasimiocenica also resembles G. (G.) miocenica Palmer, 1945 in its flat dorsal surface, but is more compressed, and has a more lobate equatorial periphery. G. (G.) multicamerata Cushman & Jarvis, 1930 is a more compressed biconvex species with a more strongly developed keel.

References:

Belford, D. J. (1984). Tertiary foraminifera and age of sediments, Ok Tedi-Wabag, Papua New Guinea. Bureau of Mineral Resources, Australia, Bulletin. 216: 1-52. gs


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Globorotalia (Globorotalia) quasimiocenica compiled by the pforams@mikrotax project team viewed: 5-12-2019

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