THE REIGN OF REPTILES. 



183 



that the Rhynchosaurus of the Trias was a three-toed bi 

 pedal reptile, as was also the Ramphorhynchiis of the Ju 

 rassic (Fig. 74) ; and some three-toed bipedal tracks of the 

 Wealden have also been referred to reptiles. Professor 

 Cope, of Philadelphia, the most accomplished herpetologist 

 of our country, has very recentlv enunciated the conviction 



Fig. T3. Ichnolites, or tracks on stone. 



[A slab of sandstone (eight feet by six) from Turner s Falls, Massachusetts, im 

 pressed with numerous footprints of bipeds, possibly birds. The tracks indi 

 cate ten or twelve individuals of various sizes. Di&overed by Dr. James Deaue, 

 of Greenfield, Massachusetts, 143.] 



