124 



The Lower Devonian Deposits of Maryland 





SPECIES 



Maryland 



New Jersey 



New York | 





1 



Helderberg 



1 

 1 



§ 



1 



1 



I 

 1 



2 



1 



6 



1 

 1 



1 



1 



o 





1 



1 

 1 



1 



1 



"^ 





Keyser 



s 



1 



1 



I 



1 



1 



1 





1 

 1 



i 



6 



1 



1 



1 



i 



1 



1 



1 



1 



1 



1 



1 



1 



1 





1 



1 



1 



1 



1 



1 



1 



1 



3 



Id 





PORIFERA. 







* 







* 





t 

 t 



t 



;; 



t 



t 



t 



:: 





'.. 



*• 



» 



:: 





;; 



•• 



:: 



•• 



:: 

 ■■ 



:: 



;; 





:; 



'.'. 





* 



* 



": 









i 



'■'■ 



o 



COELENTERATA. 



















i 



Zaphrentis rcemeri M. Edwards and Haime.... 







V 



t 









ei 









7 











e 

























' 



t 



+ 

































T 







t 



















Ti 















- 



V 













17 



Favosites helderbergiae var. praecedens Sohuchert 





V 



* 











'fl 















21 



Favosites favosus var. inte^itabulatus Swartz. 





t 













o» 





























t 



* 







t 



*• 







j 



























Pleurodictvum lenticulare (Hall) i-- 















V 











t 



V 



<?1 















'^'^ 















* 









ffi 









ECHINODERMATA. 





» 





■^s 



Anomalocvstis disparillis Hall '' 





91 





























t 

 t 

 t 

 t 

 t 

 t 

 t 

 t 







-11 



Tetraoystis chrysalis Sclnichert 

















d 1 



Jaekelocystis avellana Schuchprt 

















47 



Pseudocrinites stellatus Schuchert 







t = restricted to Maryland. 



t AfBne = related species. 



