722 



TIT.\NOTHERES OF ANCIENT WYOMING. DAKOTA, AND NEBRASKA 



arises beneath the gastrocnemius, but lower down near 

 the heel it comes to the surface, curves around the ten- 

 don of the gastrocnemius, then out, "spreading over 

 the surface of the os calcis, partly attached to either 



The sustentaculum calcanei on its posterior surface 

 bears a long vertical groove, lying next the shaft of 

 the calcaneum; this groove lodged the tendon of the 

 flexor longus hallucis. The medial tip of the susten- 



FiGURE 659. — Skeleton and restoration of Broiitops cf. B. 



Based on the mounted skeleton in the American Museum of Natural History and on the studies summarized in the text. One twenty-flfth 



natural size. 



side it continues into the sole of the foot." (Murie, 

 1872.1, p. 163.) 



The back of the tuber calcis is roughened for the 

 "ligamentum tarsi plantare longum" (Schmaltz,) 

 which was inserted into the large tuberosity on the 

 back of the cuboid. 



taculum is roughened for the ligamentum tarsi tibiale 

 breve, which passed across to a superior postero- 

 internal process on the astragalus. 



On the front face of the calcaneum the coracoid 

 process (above the ectal facet) bears on its superior face 

 two deep pits; the inner and larger one receives the 



