GREGORY. PRESENT STATVS OF ORIGIN OF TETRAPODA 



363 



^ 



c 



^e^ 



Fig. 11. — Comparison of the paired limbs of Paleozoic rhizodonts and tetrapods 



Left pectoral limbs of (A) Sauripterus and (B) Eryops. Medial or palmar surface. 

 Left pelvic limbs of (C) Eusthenopteron, after Goodrich, and (D) Eosaiirarus, after 

 Wllliston. Medial surface. 



The elements that converge toward the mesopterj-gial axis (ulna, fibula) are hatched. 



