I 



444 



The Upper Devonian Deposits of Maryland 





Geological Range of Upper Devonian Faun 



A IN Maryland 



Pennsylvania and New York 



— Continued 









Maryland 1 



S5 





New York 









Jennings Formation 







Portage Format'n 









Woodmont 

 Member 





Chemung Member 





Ithaca 

 Member 









Ithaca 







Centr'l 









u 



i 







Fauna 





Area east of Oakland 





0. 









N. Y. 











a; 

 1 







































































SPECIES 



s 

 o 



e 







a 



c 

 £ 





5 

 .a 



o 





0) 



c 

 o 





o 



















tu 



c 



e 











c 

 o 



e 



o 



u 



3 



I 



o 

 o 



£ 



a* 



£ 



o 





£ 

 o 



C 



C 

 « 



c 



1 



<D 



•a 



rt 



S 



o 



o 



fa 



B 

 o 



s 



o 



e 



B 







o 



"3 



3 



u 



i 



c 

 o 



1 









•^ 





o 





■a 





5 



^ 



§ 





3 



■O 



£ 



c 

 o 



El. 



c 







■g 



S 



be 



c 







c 

 E 

 o 



c 





o 

 o 



o 



^ 

 ^ 



tH 



o 

 ^ 



u 



^ 



^ 







c 



o 

 o 



c 

 3 



o 



c 



C3 



a; 

 C 



3 



a 



l- 



o 





3 



1 







a 



O 



■A 



u 



hJ 



Oh 



•^ 



y^ 



S 



D 



Ui 



K 



o 



t— ( 



X 



o 



CO 



is 



O 



►J 



[=; 



o 





MOLLUSCA— CEPHALOPODA.— Continued. 









































107 



Bactrites aciculus (Hall) 



* 



• 



•; 







■; 



















* 



« 



• 



* 

 * 



« 



• 



198 



Manticoceras patersoni (Hall) 



199 



Probeloceras lutheri Clarke ? 





* 



* 



























* 



* 



. . 







200 



Tomoceras uniangulare (Oinrad) 



.. 



♦ 

























» 









' * 







201 



Sandbergeroceras chemungensis (Vanuxem) .... 











* 



* 





? 



■ 























• 





ARTHROPOD A— CRUSTACEA. 











































202 



Phacops rana (Green) 



VERTEBRATA— PISCES. 



♦ 







.. .. 



* 









• 











« 





•• 



? 



« 



• 



•• 



203 



Glyptaspis eastmani Clarke & Swartz 



•• 





•• 



.. .. 



♦ 























• ■ 



•- 



.. . 



•• 



•• 



+ = abundant, t = common, § = rare, || = very rare, H = related form, ** = compare. 

 The numbers preceding the names of the fossils refer to the occurrences of these species as shown upon the chart of columnar 

 sections of the Jennings Formation of Maryland (in pocket of this volume). 



