Dentigloborotalia anfracta

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globorotalidae -> Dentigloborotalia -> Dentigloborotalia anfracta
Sister taxa: D. anfracta,

Taxonomy

Citation: Dentigloborotalia anfracta (Parker, 1967)
Rank: species
Basionym: Globorotalia anfracta (Parker, 1967)
Synonyms:

Catalog entries: Globorotalia anfracta;

Type images:

Short diagnosis: monospecific

Description


Diagnostic characters: Coiling direction (in extant population): mixed

Test morphology: Test small, very low trochospiral, spiral side almost flat, lobulate in equatorial profile; axial profile rounded, the final cham- ber somewhat compressed; chambers inflated four to five in the final whorl, increasing slowly as added; sutures on spiral side and umbilical side radial and depressed; surface smooth, translucent, covered with fine pustules. Aperture a low arch with a broad lip. [Kennett & Srinivasan 1983]

Size: <150ยตm

Biogeography and Palaeobiology


Geographic distribution: Tropical [Kennett & Srinivasan 1983]

Phylogenetic relations: Gr. (Te.) anfracta is distinguished from Gr. ( Te. ) clemenciae by its thin, almost translucent test, flat spiral side, and rather compressed final chamber in peripheral view. Gr. (Te.) anfracta is the modern representative of the Tenuitella lineage and seems to have developed from Gr. (Te.) clemenciae in the Late Miocene. [Kennett & Srinivasan 1983]

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (SCOR WG138)
First occurrence (base): within N18 zone (5.20-5.72Ma, base in Messinian stage). Data source: Kennett & Srinivasan 1983

Plot of occurrence data:

Primary source for this page: Kennett & Srinivisan 1983, p.164

References:

Kennett, J.P. & Srinivasan, M.S., (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania, 1-265 pp.

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


Dentigloborotalia anfracta compiled by the pforams@mikrotax project team viewed: 29-5-2017

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