14 CONTEXTS 



PAGE 



Exposures West of Tonoloway Ridge 77 



Exposure at Tonoloway 80 



Exposure near Hancock 81 



Exposure at Millstone 83 



Exposure at Warren Point 83 



Exposure at Ernstville 85 



Exposure at McCoys Ferry 86 



Correlation of the MrooLE Devonian 88 



ONONDAGA MEMBER 88 



MARCELLUS MEMBER 07 



HAMILTON MEMBER !)S 



GEOLOGICAL DISTRIBUTION OV SPECIES 103 



RELATIONS OF THE FAITNAS TO THE SEDIMENTS 109 



SYSTEMATIC PALEONTOLOGY, MIDDLE DEVONIAN 115 



Coelenterata. Charles S. Prosser 119 



Vermes. Edward M. Kindle 122 



Molluscoidea 123 



Bri/ozoa. E. O. Ulrich and R. S. Bassler 123 



Brachiopoda. Charles S. Prosser and Edward M. Kindle 124 



Mollusca 214 



Pelecypoda. Charles S. Prosser and Edward M. Kindle 214 



Gastropoda. Charles S. Prosser and Edward M. Kindle 280 



Cephalopoda. Charles S. Prosser and Edward M. Kindle 307 



Arthropoda 326 



Trilotata. Charles S. Prosser and Edward M. Kindle 326 



Ostracoda. Charles S. Prosser and Edward M. Kindle 335 



THE UPPER DEVONIAN DEPOSITS OF MARYLAND. By Charles S. 



Prosser and Charles K. Swartz 339 



Introductory 341 



Stratigraphic and Paleontologic Characteristics 347 



the JENNINGS FORIMATION 347 



Introductory 347 



Distribution of the Jennings Formation 353 



Exposures in Washington County 354 



Exposure East of Millstone 354 



Exposure between Tonoloway Ridge and Sideling Hill 356 



Exposures in Allegany County 359 



Exposure West of Sideling Creek 359 



Exposure Northwest of Little Orleans 359 



Exposure on Green Ridge 360 



Exposure on National Road on Polish Mountain 362 



Exposure on Williams Road on Polish Mountain 367 



Exposure East of Cumberland 370 



Exposure on Jennings Run 371 



Exposure on Braddock Run 376 



Exposures in Garrett County 377 



Exposure in Savage River Valley 377 



Exposure on National Road 378 



