White 1928 pl27-13.JPG
angulata_figured-specimen_illus.jpg
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.
White 1928 pl27-13.JPG
angulata_figured-specimen_illus.jpgCurrent identification/main database link: Morozovella angulata (White 1928)
Original Description
Test rotaliform, dorsal side flat, ventral side convex, umbilicate, periphery sharply angled; chambers few, usually four or five in the last whorl, inflated, rapidly increasing in size; sutures distinct, curved, deep, not limbate; wall granular or subspinose, very finely perforate; aperture an elongate opening extending from the umbilicus almost to the peripheral margin and sometimes provided with a narrow lip.
Size: Diameter of type specimen, 0.35 mm.; height, 0.25 mm.
Extra details from original publication
Occurrence: This species is generally found, as a rare form in all horizons from the base of the Velasco up into the the middle portion of that formation.
The species is a transitional form from Globigerina to Globorotalia, differing from G. crassaformis in having a sharply angled periphery.
Most species of Globigerina show innumerable transition stages from one species to another. The more carefully these variations are observed the closer the correlations which may be made. Identification with literature is difficult, as most fossil species have been erroneously compared with Recent forms.
White, M. P. (1928). Some Index Foraminifera of the Tampico Embayment Area of Mexico. Journal of Paleontology. 2(3): 177-215. gsReferences:
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Globigerina angulata compiled by the pforams@mikrotax project team viewed: 19-4-2021
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