REPTILIA: LIMNOSCELIS 



41 



They probably come from some microsaurian reptile not unlike 

 Eosauravus copei. 



Pelvic girdle and extremity. — The pelvic girdle hes in natural 

 articulation, with but Uttle disturbance; the right pubis is a trifle 

 compressed, and the extremity of the left iHum had been broken 



Fig. 14. — Limnoscelis paludis. Pelvis, from below, two-fifths natural size, a, 

 cross-section through pubes at a; b, cross-section through ischia at b. 



off and turned aside before fossihzation. Both femora are closely 

 articulated in the acetabula, directed obliquely dorsad and cephalad. 

 The pubes and ischia lie in a subhorizontal position, with a pro- 

 tuberant carina along the middle, deeper anteriorly. This keel, 

 however, is not formed by the downward deflection of the margin 

 of the bones, but by the increased depth of the symphysis, as will be 

 seen from the cross-sections of the figure, sections made at points 



