r 



PLATE 24 



/7-L 



3. 



Photograph of the type specimen of Pelion lyelli Wyman, from the Ohio Coal Measures. Supposed to 

 represent the ancestral form of the Salientia. X 2. Original in American Museum of Natural History. 



Scales of Cercariomorphus parvisquamis Cope, a microsaur from the Ohio Coal .Measures. X 10. Original 

 in American Museum of Natural History. 



Type specimen of Cercariomorphus parvisquamis Cope, from the Ohio Coal Measures. Original in 

 American Museum of Natural History. X 0.75. 



