Maryland Geological Survey 265 



This small florule is hardly sufficient for exact correlation. It is not, 

 however, as old as the Cenomanian or as young as the Aturian, and is 

 probably Coniacian (i. e., Lower Emscherian). 



The German Empire comprises so many subordinate political divisions 

 whose boundaries have shifted to such an extent that any treatment of 

 the fossil floras by political divisions is unsatisfactory. Perhaps the most 

 satisfactory areal division of the Upper Cretaceous in this region is that 

 adopted by Kayser ' who discusses briefly the following areas : 



(1) The small area of Senonian (Emscherian-Maestrichtian) around 

 Aachen (Aix-la-Chapelle) and Maestricht on the Belgian-Holland border 

 of Bhenish Prussia. 



(2) The Northwest German or Lower Saxon area. This embraces the 

 region north of the lower Ehein Schiefergebirges and the Hartz, extend- 

 ing from the Ehein to the Elbe. It includes the so-called Westphalian 

 Cretaceous basin, the Teutoburger Wald, the Wesergebirge and the " sub- 

 hercynischen " Cretaceous in the vicinity of Hannover, Braunschweig, 

 Goslar and Halberstadt. 



(3) The Saxon-Bohemian area. This includes the extensively 

 developed Upper Cretaceous of northern Bohemia and in Germany com- 

 prises the region from the Elbsandsteingebirge in Saxony to Lowenberg 

 and other places in Lower Silesia, as well as the country around Bayreuth, 

 Amberg, Kegensberg, etc., southwest of the Bohmerwald. 



(4) The Upper Silesian area around Appeln and Leobsehiitz. 



(5) The Baltic area in Pommern, Mecklenburg, Holstein, bei Ltine- 

 burg. 



(6) The Prussian Cretaceous area widely spread in East and West 

 Prussia. 



The first three of the foregoing are very important paleobotanically, 

 while the last three are of practically no interest to the paleobotanist. The 

 Saxon-Bohemian area is so much more extensively developed southeast of 



1 Kayser, Formationskunde, ed. 5, 1913, p. 521. 



