72 EOOTE : GEOLOGICAL STRUCTURE OE THE EASTERN COAST. 



The most numerously developed species are the Ostreida, then the 

 Numerical ratio of Terebratula and Rhynchonellida. The Ammonites 

 species, are fairly numerous, but mostly fragmentary. 



Of the Gastropoda, the Patellida are the most remarkable, both for 

 number and great size, but unfortunately most of the specimens are in 

 poor preservation. Three, if not four, species are recognisable among 

 them. Many of the shells were imbedded in a broken condition. 



No determinable fossils were found in the Pavulur sandstones in 



situ ; those seen were extremely minute fragments 



Pavulur sandstones. .. . ,. . „ , 



or shells, but little larger than the grains or sand 



they are associated with. Fossils of recognisable character were, however, 

 Calcareous sandstone found in a number of blocks of coarse calcareous 

 of uncertain origin. sandstone forming part of the revetment of the 



bund of a little field tank about half a mile north-east- by-north of 

 Budavada village. 



Unfortunately, these blocks could not be traced to their original sites. 

 None of the contained fossils could be identified with true Budavada 

 species, and the blocks themselves bear no resemblance to either the 

 Budavada or Pavulur rocks. According to the villagers they had been 

 brought from the Pavulur quarries, but no similar stone could be traced 

 by me ; their origin must, therefore, remain uncertain. 



The calcareous sandstone forming these blocks is very hard and ex- 

 ceedingly tough, and the fossils very hard to extract. 



The following list is a rough determination of the few that I 

 Its fossils. succeeded in getting after much severe labour : — 



Belemnites sp., small 

 Cerithium sp. 

 Turbo sp. ? 



Patella sp. 

 Iihynchohella sp. 

 Cardium sp. 



Ostrea sp. 



Lithodomus bores in Ostrea. 

 Small bivalves undetermined, several. 



( n ) 



