CASE 



PLATE 2 



H 



A. Posterior surface of skull of Buettneria perfecta. X0.3. 



B. Ekdfllged view of port inn of the palatine and maxillary of same, showing the 



teeth opposite the internal nares. The labyrinthine structure is 

 clearly seen. X2. 



C. Metopoaourws(T) joneri, No. 3814, U. of Mich. X0.3. Ventral surface of 



clavicles and interclavicles. 



