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Globorotalia angulata abundocamarata Bolli 1957 from: Bolli, H.M. (1957): The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad, B.W.I . Bulletin of the U.S. National Museum Vol. 215 p. 61-82
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Anonymous: Unedited TaxonConcept data
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Subspecies Globorotalia angulata abundocamarata Bolli 1957


Diagnosis / Definition:
Bolli (1957):
Shape of test very low trochospiral, spiral side almost flat, inner whorl occasionally slightly raised; umbilical side strongly convex; equatorial periphery slightly lobate, almost circular; axial periphery subacute to acute without distinct keel. Wall calcareous, perforate, surface finely spinose. Chambers subangular, inflated; 14-18, arranged in 2-2 1/4 whorls, the 6-7 chambers of the last whorl increasing slowly in size. Sutures on spiral side curved, slightly depressed; on umbilical side radial, depressed. Umbilicus narrow, deep, open. Aperture a narrow slit; interiomarginal, extraumbilical umbilical. Coiling random. Largest diameter of holotype 0.4 mm.
Discussion / Comments:
Bolli (1957):
G. angulata abundocamerata Bolli, new subspecies, is a multichambered form of G. angulata (White) with a slightly different stratigraphic range.
Synonym list:
Bolli (1957):
1957 Globorotalia angulata abundocamarata Bolli. - Bolli : pl. 17, figs. 4-6 new subspecies
References:

Bolli,H.M. (1957):
The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad, B.W.I . Bulletin of the U.S. National Museum Vol. 215 p. 61-82
Anonymous: Unedited TaxonConcept data
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