IN THE ESNA-IDFU REGION, NILE VALLEY, EGYPT 157 



This species is named after Professor Alan Wood, of the Department of Geology, 

 U.C.W., Aberystwyth 



HOLOTYPE. P.45567. 



Paratypes. P.45568. 



Horizon and locality. Holo- and paratypes, from sample No. 43, Gebel 

 Owaina section. 



Stratigraphical range. Globigerina alanwoodi is restricted to the lower Upper 

 Paleocene, ranging throughout the G. psendomenardii Subzone as a rare to " flood " 

 form in the sections studied. 



Globigerina aquiensis Loeblich & Tappan 



1957a Globigerina aquiensis Loeblich & Tappan : 180, pis. 51, figs, ^a-^c ; pi. 56, figs. ^a-6c. 

 ? 1960a Globigerina aquiensis Loeblich & Tappan ; Berggren : 65-66, pi. I, figs. ia-2c ; 

 pi. 7, figs. ia-2c. 



Remarks. Globigerina aquiensis was first described by Loeblich & Tappan 

 (1957a) from the Aquia formation of Maryland and Virginia and the Vincentown 

 formation of New Jersey, which they considered to be of Upper Landenian (Sparn- 

 acian) age. 



Berggren (1960a) described this species from the Lower Eocene of northwestern 

 Germany, while Gartner & Hay (1962) recorded it from the type Ilerdian of Spain 

 and the Ilerdian " marne blanche " of Mont Cayala, France. The latter authors 

 included G. kozlowskii Brotzen & Pozaryska in the synonymy of this species, although 

 the morphological characters and stratigraphical distribution of these two species 

 strongly oppose this proposition. 



Globigerina aquiensis is distinguished by its small, inflated, moderately to relatively 

 high, trochospirally coiled test ; its chambers which increase moderately in size and 

 which are elongated in the direction of coiling ; its small umbilicus ; and finely hispid 

 surface. It is very closely related to G. haynesi sp. nov. (p. 165) from which it has 

 probably evolved, and to G. pseudocorpulenta Khalilov which might possibly have 

 evolved from it, although no direct evidence was recorded. 



In the Esna-Idfu region, G. aquiensis is rare in the upper part of the G. velasco- 

 ensis Zone, the G. aequa/G. esnaensis Subzone of Upper Paleocene age, and gradually 

 fades out in the overlying Lower Eocene G. wilcoxensis Zone. 



Hypotype. P.45569. 



Horizon and locality. Hypotype from sample No. 63, Gebel Owaina section. 



Globigerina arabica sp. nov. 

 (PL 18, figs. 6a-c) 



Diagnosis. A Globigerina with large, moderately to highly spired, smooth- 

 walled test ; radial, incised sutures on both sides ; chambers increasing slowly in size. 



