120 THE DEVONIAN AND CARBONIFEROUS. [bull. 80. 



the Uinbral, as well as the Vespertine, is scarcely noticeable, while the 

 increasing limestones form the most important feature. 



The Uuabral of Pennsylvania, Maryland, and the Virginias is equivalent to the 

 Chester and St. Louis groups of the Mississippi Valley, and it may include the Keo- 

 kuk ; while in the Vespertine must be sought the equivalents of the Burlington, and 

 Wly of the Kinderhook. 



In 1888 Mr. Stevenson, as one of the members of the American com- 

 mittee, prepared a report on the Upper Paleozoic (Carbonic) for the 

 International Congress of Geologists. In this report the classification 

 and synonomy of the Lower Carbonic is given as follows : l 



GREENBRIER. 



Synonyms and local subdivisions. 



Pennsylvania XI, Unifcral, most of ; Mauch Chunk, most of; Shenango shale f 



ru,;~ S Maxville limestone.. > ttt-^^i^ ~-* nn - * 



° hl ° * - " ] Xogan series J Waverly group, in part. 



Virginia XI Greenbrier group. 



Tennessee.. ) < Mountain limestone. 



Alabama... J I Siliceous group. 



Indiana Mountain limestoue. 





Michigan.. ^ f Chester jrromi 



Illinois.... ( J jester group. 



Iowa ) < St. Louis group. 



ourV:j [Keokuk group. 



Nova Scotia ) 



New Brunswick.. > Windsor group. 

 Newfoundland... S 



POCONO. 



Synonyms and local subdivisions. 



i Shenango group. 



Pennsylvania X, Vespertine, Pocono < Mead ville group. 



( Oil Creek group, in part. 



Virginia X New River series. 



( Cuyahoga shale. 



ru,;«. tw -.—i., „,«„-rv ;„ «„,.+ J Berea shale and grit. 



Ohio: Waverly group, in part J Bedford shale. 



^Cleveland shale. 



. I I Absent, or represented by the lowest beds of the Siliceous group. 



Indiana Knobstone group, in part. 



Illinois Burlington group. 



Iowa Kinderhook group. 



Michio-an J Michigan salt group. 



M,cm » an \ Marshall group. 



New York Upper part of the Catskill gray sandstones. 



Nova Scotia Horton series. 



rn Quebec Bonaventnre series. 



1 See Ileport, D, pp. 7, 8. 



