CATALOG OF ORIGINAL DESCRIPTIONS: Rugoglobigerina (Archaeoglobigerina) bashai El-Nakhal and El-Naggar 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 -> R -> Rugoglobigerina (Archaeoglobigerina) -> Rugoglobigerina (Archaeoglobigerina) bashai
Other pages this level: R. (Archaeoglobigerina) bashai

Rugoglobigerina (Archaeoglobigerina) bashai

Citation: Rugoglobigerina (Archaeoglobigerina) bashai El-Nakhal and El-Naggar 1984
Rank: Species
Type locality: Holotype (fig. 1) from a depth of 5500-5510 ft in Al-Hout No. 11 well, in the Persian Gulf 50 km off the southern coast; paratype (fig. 2) from Cenomanian at a depth of 7020-7030 ft, and paratype (fig. 3) from a depth of 6440-6450 ft, Failaka No. 1 well, off the west end of Failaka Island east of Kuwait City; Kuwait.
Type age (chronostrat): Upper Cretaceous, Turonian, upper Mishraf Formation, Praeglobotruncana stefani Zone; ranges down to Cenomanian, Rumaila Limestone, Clavihedbergella simplex Zone.
Type specimens: pl. 1, figs. 1-3: Fig. 1, holotype; 1-2, paratypes
Type repository: Kuwait; Department of Geology, University of Kuwait.

Current identification:

Original Description
“Diagnosis. - A Rugoglobigerina (Archaeoglobigerina) with a small to medium sized, trochospiral, closely coiled test, a very small initial whorl, and a large later one with 3 large chambers, almost straight, depressed sutures and a small sized umbilicus.

“Description. - Test medium sized, coiled in a relatively low trochospire; ventral side inflated; equatorial periphery triangular, deeply lobate; axial periphery rounded; chambers of the dorsal side not all clear, initial ones are very small, globigerine and increase slowly in size as added; chambers in the outer whorl 3, globigerine, inflated, much larger than the early ones and almost equal in size; on the ventral side the chambers are 3 globigerine, inflated and increase very slowly; sutures on both sides are almost straight, radial and depressed; umbilicus small, covered by tegilla which are only partially preserved; primary aperture interiomarginal, umbilical, covered by poorly preserved tegilla; surface rough, finely papillose, wall calcareous perforate, except for the imperforate tegilla.

Size: “Dimensions of the holotype: Maximum diameter 0.227mm; minimum diameter 0.20 mm; thickness 0.141mm.

Extra details from original publication
“Remarks. - Rugoglobigerina (A.) bashai differs from the known R. (A.) species by its triangular outline and its closely coiled test.”


El-Nakhal, H. & El-Naggar, Z. R. (1984). On the occurrence of the foraminiferal genus Rugoglobigerina in the Late Cretaceous succession of Kuwait. Journal of the Geological Society of Iraq. 16-17 (1983-1984): 149-183. gs


Rugoglobigerina (Archaeoglobigerina) bashai compiled by the pforams@mikrotax project team viewed: 25-2-2021

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