GEOLOGICAL EANGE 



275 



as well as in Jamaica, in the West Indies, contain 

 an abundance of Orbitoides. 



The Miocene System in the Vienna Basin is very 

 productive of Foraminifera, and a rich assemblage has 

 been described by D'Orbigny, and later by Karrer. 

 The Miocene Clays and sands of Muddy Creek and 

 Mount Gambier, in Victoria, Australia, have yielded 

 an abundant fauna, and the specimens are well 



Fig. 36. — Conulites Limestone ; Tertiary, 

 Egypt, x 12. 



grown and comparable in many respects with the 

 specimens from Jamaica, as well as those of Java 

 and Christmas Island (fig. 35). In the United States 

 the Miocene of Maryland and Virginia have been 

 proved to be rich in these organisms. The upper 

 series in Malta, which are of Miocene age, contain 

 a vast number of a large variety of Heterostegina. 

 In Italy the richly fossiliferous tertiaries are partly 



