NO. 3 



GRAND CANYON FOSSIL FOOTPRINTS — GILMORE 



25 



of moderate subeciual length, thick, with broadly rounded extremities, 

 apparently without claws, hirst and second toes slightly diverted 

 from the outer two which are more or less parallel. Foot turned 

 strongly inward. Sole broad, subrectangular in outline. Approximate 

 length of toes: I, 30 mm., II, 30 mm.. Ill, 35 mm., l\\ 35 mm. Fore- 

 foot: Length 75 mm., width (estimated) about 100 mm. There are 

 probably four toes although only three can be observed. Both of 

 the imprints have had at least one toe obliterated by the hindfoot 



Fig. 10. — Baropus Icntus JMarsh. Diagram of trackway. About 

 T2 natural size. (After Marsh.) 



Stepping upon them so that their entire number is in doubt. The toes 

 are stout, of moderate length, and, as in the pes, have rounded ends 

 without claws. First digit slightly set off from the others. Sole wider 

 than long and broadly rounded behind. Foot turned strongly inward 

 and placed inside the line of the hindfoot impressions. Palm about 

 twice the length of the longest toe, subquadrate in outline and broadly 



