ose atony drifts = St. D. 

 ^nite = Gran. Cretaceous 



Vl 



IG 



3 



o 



a 



3 



387 



21 



46 



B.C., 



S.G. 



Uii. 

 Str. 



Chalk 



Nil 



17 



El 



be 

 3 



825 



20 



40 



B.C. 



Un. 



Chalk 

 Nil 



Nil 



18 



i- a 



"3 3 

 «•? 



re g 



is 



ji * 

 O M 



[rosace ^^cf^re 258. 



34 



s> 

 u 

 o 



s 



o 



35 



200 j (00 



28 



43 



B.C. 



48 

 21 

 J.C. 



Un. I [Jn 



Bas. 

 Nil 



Nil 



2i 



90 



60 

 26 

 B.C. 



)rd. 



Nil 



Tor. 



r 



36 



a 



03, 



s o 

 a P< 



a 



S 



o 

 _S 



Circa 

 800 



60 



St.D. 



Un. Un 



Bas. Ord. k 

 Gran. 

 Nil 



Nil 



37 



c 



dj 1) 

 bo's 



rO to 



e 



m 



o 



o 



s 



100 



61 



S.G., 

 St.D. 



Str. 



Ord. 



Nil 



Nil 



38 



^^ 



o o 



4H 



60 



B.C. 



Un. 



Gran. 



Rich 



39 



C3 



M 



O.D. 



71 



Co. Ar- 

 magh 



40 



o 



.a 

 cm 



CS 



a 



u 



St.D. 



Un. 



142 



47 

 B.C. 



Un. 



Ord. Carb. 

 L. 



