272 THE FOEAMINIFEEA 



The Kressenberg inlier, in Bavaria, consisting of 

 the Lower Nummuhtic series, has yielded a very 

 rich foraminiferal fauna. The nummuHtes there 

 and in Austria are of an exceptionally large size. 

 The Kressenberg series also contains numerous 

 species of Orbitoides, which, from that locality, 

 have been principally worked out by Giimbel. 



The Nummulitic series in Egypt constitutes 



Fig. 33. — Axveolina Limestone ; Eocene, 

 Faeafea, Egypt, x 1G. 



the greater part of the Eocene limestones. It is 

 divided into three stages, the Libyan or Lower 

 Eocene, the Mokattam or Middle Eocene, and the 

 Bartonian or Upper Eocene ; each of these contains 

 certain characteristic groups of nummulites, which 

 are of much value in the determination of the various 

 horizons. The nummulites attain their greatest 

 development and abundance in beds of Middle 



