THE CARBONIFEROUS AMMONOIDS OF AMERICA. 



By James Pekrin Smith. 



STRATIGRAPHY OF THE AMERICAIV CARBONIFEROUS, 



LOWER CARBONIFEROUS. 



Kinderhook. — The oldest Carboniferous fauna, of America is typically 

 developed in the northern part of the ^lississippi Valley, where the 

 formations in which it is found liave been called Kinderhook, Chouteau, 

 Marshall, and Waverly. Amnionoids of this epoch are best known from 

 the goniatite beds of Rockford, Ind., where the following sjjecies have been 

 found: I'rolecanifes Ji/oni Meek and Worthen, Aganidcs rotatorias de Koninck, 

 Muenstcroceras oiveni Hall, M. jjaralldnni Hall, Prodromites fiorhyi jMiller, 

 1'. pra'Diatiirus Smith and Weller. In addition to these, the Kinderhook 

 stage of other })arts of the State has furnished Prolecanites c/reenii Miller 

 and Muensteroceras indianense Miller, llie Chouteau limestone near Sedalia 

 and Louisiana, Mo., has also furnished a number of ammonoids: Prolecanites 

 louisianensis Rowley, P. (jurlei/i Smith, Aganides jessiece Miller and Gurley, 

 A. discoidalis Smith, Prodromites gorhyi Miller, P. ornattis Smith, Pericyclus 

 blairi Miller and Gurle}', Muensteroceras f holmesi Swallow, M. f morganense 

 Swallow, and M. ! osagense Swallow. 



The Marsliall group of Michigan has furnished Prolecanites houghtoni 

 Winchell, /'. marshullensls Winchell, Muensteroceras oiveni Hall, M. jMrallelitm 

 Hall, M. holmesi Swallow, Prionocerasf andrewsi Winchell, Aganides f 

 propinquus Winchell, A. romingeri Winchell, A. shumardiamts Winchell, 

 Glgpliioceras ! fygmccum Winchell. 



The Lower Waverly, or Kinderhook, of Ohio has furnished Prolecanites 

 lyoni Meek and Worthen, P. marshallensis Winchell, Prionoceras f andrewsi 

 Winchell, P. ? oliioense Winchell, Aganides f shumardianus Winchell. 



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