go UPPER CRETACEOUS-LOWER TERTIARY FORAMINIFERA 



Stratigraphical range. White (1928) described G. conica from the Maestrich- 

 tian Mendez formation of Mexico. However, he stated that the species ranges from 

 the lower to the uppermost Cretaceous (Tamaulipas-Mendez formations) of Mexico, 

 which is rather strange, as most of these Globotruncana species have very short 

 ranges. Apparently he had confused the species with superficially similar Globo- 

 truncana and Praeglobotruncana species which occur in older strata. Globotruncana 

 conica was later described from the Middle and Upper Maestrichtian of S.E. Turkey 

 (Tilev 1952) and form the Maestrichtian of northern Sinai, Egypt (Said & Kenawy 

 1956). It was also stated to occur in the Maestrichtian of northern Italy (Cita 1948, 

 1955, and Bolli & Cita 1960a) ; from the Upper Santonian-Lower Campanian of 

 Trinidad (Bolli 1957, where the same author also recorded a form he described as 

 G. cf. conica White in the Campanian-Maestrichtian of the same area) ; and from the 

 upper part of the Mendez shale of Mexico (Hay i960). 



In the Esna-Idfu region G. conica White is rare to common in the Middle Maestrich- 

 tian G. gansseri Zone. 



Globotruncana contusa contusa (Cushman) 

 (PI. 7, figs. 2a-y; PI. 11, figs. la, b) 



1926a Pulvinnlina area Cushman var. contusa Cushman : 23 (no figs.). 



1927a Globotruncana area Cushman var. contusa (Cushman) ; Cushman : 169 (no figs.). 



J 939 Globotruncana area (Cushman) var. contusa (Cushman) ; Morozova : 80, pi. 1, figs. 1-3. 



1946 Globotruncana area (Cushman) var. contusa (Cushman) ; Cushman : 150-151, pi. 62, 

 figs. ba-b. 

 ? 1946 Globotruncana conica White ; Keller : 102-103, pi. 3, figs. 4, 5. 



1948 Globotruncana area (Cushman) var. contusa (Cushman) ; Di Napoli : 21-22, text-figs. 

 2a-c. 



1951 Globotruncana {Globotruncana) contusa (Cushman) ; Noth : 79, pi. 8, figs, ija-c. 



1951 Globotruncana contusa (Cushman) ; Bolli : 196, pi. 34, figs. 7-9, text-fig. if. 



1953 Globotruncana contusa (Cushman) ; Subbotina (pars) : 192—194, pi. 2, figs. 3a-e ; 

 pi. 12, figs. 2a-c (non figs. ia-c). 

 ? 1954 Globotruncana contusa (Cushman) ; Nakkady & Osman : 78-79, text-figs. Aa-c. 



!955 Globotruncana contusa contusa (Cushman) ; Gandolfi : 53, pi. 4, figs. 3a-c. 



1956 Globotruncana contusa (Cushman) ; Wicher : 136, pi. 12, figs. 5, 6. 



1956a M arginotruncana contusa (Cushman) Hofker : 53, text-fig. 9. 



1960a Globotruncana (M arginotruncana) contusa (Cushman) ; Hofker : 225, text-figs. Z2a-c. 

 ? 19600 Globotruncana contusa (Cushman) ; Hofker : 586, text-fig. 1, drawing No. 15. 



i960 Globotruncana contusa (Cushman) ; Olsson : 50, pi. 10, figs. 25, 26. 



i960 Globotruncana contusa (Cushman) ; Vinogradov : 311, pi. 4, figs. 23a-24c ; pi. 5, 

 figs. 25a-c. 

 ? 1962 Globotruncana (M arginotruncana) contusa (Cushman) ; Hofker : 1062, text-fig. 7A. 



Emended diagnosis. A Globotruncana with large highly spiroconvex test, 

 distinctly folded surface, roughly angular, polygonal periphery, flat to slightly 

 concave ventral side, sharply cut rectangular chambers on ventral side, radial, 

 depressed ventral sutures, two well-developed marginal keels and almost horizontal 

 peripheral band. 



