PIATE 24 



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1. ['holograph 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. 



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



in American Museum of Natural History. 



3. Type specimen of Cercariomorphus pan'isquainis Cope, from the Ohio Coal Measures. Original in 



American Museum of Natural History. X 0.75. 



