NO. 3 GRAND CANYON FOSSIL FOOTPRINTS GILMORE 



59 



(i 



' A* \% II m 



Fig. 29. — Collettosaurus magna (Butts). Type. Imprint of right 

 side. About natural size. (After Butts.) 



Fig. 30. — Collcttosiutnis niissoiirioisis (Butts). Type. Imprints of 

 fore- and hindfoot of left side. Natural size. (After Butts.) 



