Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 7. 1976. (Budapest, 1976)
Bed No. Lithology Thickness (meter) 4 Greyish-white siliceous limestone, hard, compact with Ostrea multicostata and Nummulites sp. 60 3 Snow white, light grey massive chalky limestone with abundant Nummulites , Operculina, Rhanikothalia and Assilina. 96 2 Hard marly limestone with scattered flinty bands with abundant pelecypods, particularly Lucina thebaica. 60 1 White compact marl. 20 Total 236 The large foraminifera in the studied section: Some 18 species of larger foraminifera are recorded in the limestone of the Thebes Formation of Gabal El Shaghab section. Some of these large foraminifera are here described and illustrated for the first time in Egypt. The different species were separated from the chalky limestone and from the upper silicified limestone (Bed 2), at the top of the section. These are: Nummulites atacicus LEYMERIE, N. globulus LEYMERIE, N. solitarius DE LA HARPE, Operculina jiwani DAVIES, Operculina jiwani DA VIES grandis n. subsp ., Operculina subsalsa DAVIES, Operculina patalensis DAVIES Operculina subammonea DONCIEUX, Operculina minima n.sp ., Operculi na dentata n.sn .: Assilina dandotica DAVIES, A . subspinosa DAVIES, A . ranikoti DAVIES, Assilina sp. ; Ranikothalia soldadensls (VAUGHAN &COLE); Operculinoides daviesi HASSAN and Heterostegina ruida SCHWAGER. The majority of large foraminifera species from Gabal El Shaghab belong to the subfamily Nummulitinae, and subfamily Cycloclypeinae . The subfamily Nummulitinae includes the type genus Nummulites and those of its nearest allies which preserve the planispiral mode of development. Generic distinctions from the type are found in Table 1. The subfamily Cycloclypeinae is very sparsely represented in the Thebes Formation of Gabal El Shaghab, it is represented only by genus Heterostegina, although this genus is planispiral in habit, its chambers are subdivided by secondary septa into rectangular chamberlets .