FIKST TKIASSIC PERIOD. 



the chelonians, they have only left traces of their foot-prints (fig. 

 110). In fig. 151, are the imprints of the three fore phalanges of a 



Fig. 151. Foot-prints and murks of Rain-drops. 



"bird, accompanied by the curious incidental impressions of rain- 

 drops which happened to fall at the moment the bird passed the spot. 



314. Synopsis of the Animal Kingdom (exclusive of the Annulata) 

 during the First Trlassic Period. 



