220 



82) A medial extrascapula absent [0] (Fig.44A), or present [1] (Fig.44B) on supraoccipital. 



83) Vomer's posterior process short and blunt [0] (Fig.52B), or elongated and sharp [1] (Fig.52A). 



84) A T-shaped ridge at dorsal side of vomer absent [0] (Fig.52A), or present [1] (Fig.52B). 



85) A ridge on the dorsal side of parasphenoid poorly [0], or well [1] developed. 



86) A notch at the posterior margin of ascending wing of parasphenoid large [0] (Fig.53E), or small 

 [1] (Fig.53A). 



87) Fork on the posterior end of parasphenoid broad and shallow [0] (Fig.53A). or narrow and deep 

 [1] (Fig.53F). 



88) Posterior portion of parasphenoid reaching to the posterior [0], or middle [1] portion of the dor- 

 sal part of basioccipital. 



89) A notch absent [0] (Fig.55A), or present [1] (Fig.55B) at the anterior margin of basioccipital. 



90) A concavity at the ventral side of the dorsal portion of basioccipital elongate and rectangular [0], 

 or short and triangular [1]. 



91) Space between the anterior end of crest at the dorsal side of basioccipital broad [0] (Fig.55B). 

 or narrow [1 ] (Fig.55C). 



92) The crest at the dorsal side of the dorsal portion of basioccipital elongated [0] (Fig.55B), or short 

 [1] (Fig.55A). 



93) Pharyngeal pad of basioccipital poorly [0] (Fig.55A), or well [1] (Fig.55C) developed. 



94) The anterior process of the pharyngeal pad of basioccipital bone present [0] (Fig.55B), or absent 

 [1] (Fig.55A). 



95) The lateral process at the anterior margin of the phary ngeal pad of basioccipital absent [0] 

 (Fig.55A). or present [1] (Fig.l3C). 



96) The posterior process of basioccipital narrow [0] (Fig. 55 A), or broad [1] (Fig.55C). 



97) The anterior process of maxilla. narrow [0] (Fig.58C). or broad [1] (Fig.58C). 



98) Anteromedial process of maxilla sharp [0] (Fig.58A). or blunt [1] (Fig.58B), or very small (al- 

 most absent) [2] (Fig.58C). 



99) Anterior ascending process of maxilla high [0] (Fig.58E), or lower, almost absent [1] (Fig.58B). 



100) The articulatory facet of maxilla formed by base of the anterior ascending process [0] (Fig.58C). 

 or by both of the anteromedial process and the anterior ascending process [1] (Fig.58B). 



101) Posterior ascending process of maxilla broad [0] (Fig.58B). or narrow [1] (Fig.58C). 



102) Posterior process of maxilla extending ventroposteriorly [0] (Fig.58D). or posteriorly [1] 

 (Fig.58B). 



103) Dentary slender [0] (Fig.60C). or blunt [1] (Fig.60B). 



104) Coronoid process of dentary not perpendicular to [0] (Fig.60A), or perpendicular [1] (Fig.60C) 

 to the dorsal margin of the dentary. 



105) Retroarticular short [0]. or elongated [1]. 



106) About one third [0] (Fig.60C). or about half [1] (Fig.59A) of sesamoid bone overlapping the 

 dentary. 



107) Posterior process of anguloarticular long and blunt [0], or short and sharp [1]. 



108) Meckel's cartilage "•normal" [0] (Fig.61A). or reduced [1] (Fig.61B) in size. 



109) The anterior fork of urohyal shallow, shorter than the neck length [0] (Fig.62C), or deep, lon- 

 ger than the neck length [1] (Fig.62A). 



110) Posterior margin of the ventral plate of urohyal concave [0], or convex [1]. 



