TlIK CKKTACEOUB 8Y8TKM 519 



'1'i'l'litz (Marls and limestones with Micraslers, Scaphites 

 Beds \ Geinitzi, and Pacli ydiscus peramplus. 



/"Sandstones with Inoceramus Brongniarti. 



Miilnutz I Glauconitic sandstones with Mammites nodosoides and 

 Beds "j Jlhynehonella bohemica. 



I S.i inly limestones an 1 mails with Spondylus spinosus. 

 \\ Visemberg/ Sandstones with Inoceramus lalriatus, passing north- 

 Beds \ west into marly limestones. 

 . ,, /Sandstones and sandy limestones with Acanthoceras 



- j oryca ; j rotomayense, Scaphites cequalis. and faculties bacu- 

 |J Beds I loidcs. 



cj I Perutz /Sandstones and shales with plant remains resting on 

 Beds \ pre-Cretaceous rocks. 



The highest beds of this series represent the zone of Micraster 

 coranguinum, nothing higher having l>een found in any part of 

 the area. 



5. Russia 



Strata of Upper Cretaceous age occupy large areas in Southern 

 and Central Russia, though the exposed portions are not of great 

 extent, because so much is concealed beneath a covering of Tertiary 

 Beds. The deposits are of great thickness, and must include repre- 

 sentatives of the Cenomanian, Turonian, and Senonian stages, but 

 though Greensands with Cenomanian fossils occur at the base, fossils 

 are scarce in the overlying chalks and marls, so that no zones have 

 been established ; moreover no definite Turonian division has been 

 recognised, for there seems to be an intermingling of species which 

 in Western Europe would be regarded as Turonian and Senonian. 



Useful information concerning the Russian Chalk was collected 

 in 1892 by Dr. W. F. Hume, 30 who describes the mass of the 

 formation as consisting of grey and white chalks with a band of 

 marly chalk or "Chalk Marl" between them. A boring at 

 Kharkov has proved the great thickness of these beds, and the 

 details given by Dr. Hume may be thus summarised : 



Feet. 

 Tertiary deposits .... 133 



Soft white chalk without flints 

 Bluish and grey marly chalk . 

 Grey chalk ..... 

 White chalk with flints . 

 Grey and green sands and sandy clay 



967 

 391 

 312 

 161 

 93 



2057 



The higher white chalks contain Bel. mucronata in abundance, 

 and this species is said also to occur in the marly chalks. These 

 deposits extend all across Southern Russia from Podolia and 

 Volhynia on the west to Voronetz, Saratov, and Simbirsk on the 



