CONTENTS 



PAOF 



THE MIDDLE DEVONIAN DEPOSITS OF MARYLAND. By Charles S. 



Prosser. E. M. Kindle, a^d Charles K. Swartz 2:1 



Introductory -■"> 



general distribution 2t) 



european equivalents -7 



development of the classification in new york '-'li 



adoption of romney formation 40 



Stratigrapiiic AND Paxeontolooic Characteristics 47 



THE ROMNBTY FORMATION 47 



Introduction 47 



Subdivisions 4S 



The Onondaga Shale Member 4S 



Character and Thickness 4S 



Fauna 4!) 



Romney-Oriskany Boundary 4!i 



The Marcellus Black Shale Member 4!) 



Character and Thickness 4i) 



Fauna 50 



Onondaga-Marcellus Boundary oO 



The Hamilton Member 50 



Character and Thickness 50 



Fauna 51 



Hamilton-Jennings Boundary 51 



Distribution of the Romney Formation 51 



Exposures of Onondaga Member 5:{ 



Exposures at 21st Bridge 5;i 



Exposure at Queens Point 54 



Exposure at Williams Road 54 



Exposure East of Oldtown 50 



Exposure at Tonoloway 58 



Exposure at Hancock 58 



Exposure at Berkeley Springs, West Virginia. . . 50 



Exposures of Marcellus and Hamilton Members 50 



Exposure at 21st Bridge 50 



Exposures in Braddock and Jennings Runs {i:{ 



Exposures near Cumberland (i5 



Exposures at Wolfe Mill (i7 



Exposures on Williams Road (iO 



Exposure at Gilpin 72 



Exposures of Southern Allegany County 75 



