ME SO ZOIC ERA. AGE OF REPTILES. 



349 



make out with some confidence the condition of the con- 

 tinent in Cretaceous times. 1. North of New York the 

 Atlantic shore-line was farther out than now. It crossed 

 the present shore-line near New York, passed along the 

 inner border of the Cretaceous of New Jersey, Delaware, 

 and Maryland, and southward nearly along the limit of 

 the low countries. 2. The Gulf shore-line went through 



FIG. 803. Map of North America in Cretaceous times. 



middle Alabama, and northward to the mouth of the 

 Ohio, and southward again on the other side of the Mis- 

 sissippi River. 3. Connected with this extended gulf 

 was a great inland sea five to six hundred miles wide, 

 covering the whole Plains and Plateau region (with some 

 islands in the Colorado mountains region), and stretching 

 northward probably even to the Arctic Ocean, and thus 

 dividing the continent into two parts, an Eastern or 

 Appalachian continent and a Western or Basin region 



