CATALOG OF ORIGINAL DESCRIPTIONS: Subbotina aegyptiaca El-Shinnawi 1975
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Citation: Subbotina aegyptiaca El-Shinnawi 1975Taxonomic rank: speciesType specimens: pl. 4, fig. 2a-c, holotype,Type sample (& lithostrat): lower part of Globigerina marl; associated with fauna of the Globigerinoides triloba Zone.Type age (chronostrat): Lower Miocene, BurdigalianType locality: Depth interval of 1447-1464 ft., core no. 32, Hurgada well no. 134, Hurgada oilfield, Red Sea coast of EgyptType repository: Alexandria; Geology Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Current identification:
Original Description Test low trochospiral, equatorial periphery distinctly lobulate, axial periphery rounded. Chambers strongly inflated, spherical, arranged in two and a half to three whorls, last whorl comprises four chambers, increasing rapidly in size. Sutures radial to gently curved, depressed. Wall calcareous, perforate, surface papillate to hispid, papillae showing tendency towards alignment. Umbilicus moderately wide, rather deep. Aperture interiomarginal, umbilical to slightly extraumbilical with a distinct, rectangular lip extending over and covering a great part of the umbilicus. Size: Dimensions. - Maximum diameter of holotype 0.35 mm., maximum height of holotype 0.18 mm. Extra details from original publication Remarks. - Subbotina aegyptiaca El-Shinnawi is similar to Subbotina triloculinoides (Plummer) [Globigerina triloculinoides, 1926] in the essential generic characters. However, the four chambers of the last whorl and the hispid to papillated surface of the test are distinguishing characters of Subbotina aegyptiaca. The general aspect of the test of this new species shows a close similarity to that of Globotoralia obesa Bolli, 1957 (in Ellis and Messina, 1940 et seq., Catalogue of foraminifera, New York: Amer. Mus. Nat. Hist., Spec. Publ.). However the position of the aperture and its distinct lip as well as the papillate surface of the test are distinguishing characters of Subbotina aegyptiaca."
References:
El-Shinnawi, M. A. (1975). Planktonic foraminifera from the Miocene Globigerina marl of Hurgada well-134, Eastern Desert, Egypt. Empresa Nacional Adaro de Investigaciones (ENAdI) Mineras, Addis Ababa.. (7): 199-224. gs
Subbotina aegyptiaca compiled by the pforams@mikrotax project teamviewed: 11-4-2026
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El-Shinnawi 1975 04_02.jpg
El-Shinnawi 1975 04_02.jpg
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