ot 



Mandible of Macrerpeton deani Moodie, from the Linton, Ohio, Coal Measures. 



Original in American Museum of Natural History, No. 2934. X 0.6. 

 Portion of the skull of Macrerpeton deani Moodie, possibly of the same individual 



as the mandible. From the Linton, Ohio, Coal Measures. Original in 



American Mu.seum of Natural History, No. 8535 G. X 0.4. 

 Type of Cercariotnorphua parvisquamis Cope, from the Linton, Ohio, Coal 



Measures. Original in American Museum of Natural History. X 1. 

 An additional specimen of Cercariomorphus pannaquamis Cope, from the Linton, 



Ohio, Coal Measures. Original in American Museum of Natural History. X 1. 

 Skull of Sauropleura scntellata Newberry. From the Coal Mea.sures of Ohio. X 1. 

 Tooth of Mastodonsaurus sp. indet. of the Carboniferous of Kansas. Original in 



University of Kansas Museum. X \. 

 Tooth of Ma$todon%aurus giganteus Jaeger, from the Triassic of Germany. 



Introduced for comparison with the tooth from the Kansas Carboniferous. X 1 . 



