Maryland Geological Survey 



89 



DISTRIBUTION OF THE FAUNA AND FLORA. 



The following tables show the geological and geographical distribution 

 of the animal and plant remains which have been collected in the deposits 

 of the Potomac Group both in the State of Maryland and in the contig- 

 uous areas of the District of Columbia and Virginia. The species recorded 

 in these tables will be fully described in subsequent chapters. 



TABLE SHOWING THE DISTRIBUTION OF THE ANIMAL REMAINS. 





Arundel. 



Patapsco. 





Maryland. 



District of Columbia. 



Virginia. 





Near 

 Muirkirk. 



a . 



(U id 



Si 3 



03 





be 



Washington. 



White 

 House 

 Bluff. 



DiNOSAURIA. 



Allosaurus medius 



* 



























* 

 * 

 * 

























Pleuroccelus altus 















* 













* 



* 











-Pviconodon cfcissus 













Crocodilia. 

 Goniopholis affinis 





* 









Gastropoda. 

 Bythinia arundelensis 







* 

 * 

 * 



* 































Pelecypoda. 

 Cyvenci marylcindico, 





































The fossil plants which are much more abundant than the animal re- 

 mains, are recorded in the tables which occupy the following six pages. 

 All those occurring in the District of Columbia are listed as well as 

 certain forms from the Potomac deposits of Virginia, although not all of 

 the forms which have been found in the latter state are included. 



