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CAPT. L>. M. S. WATSON ON SEYMOURIA, 



Text- figure 15. 



Series of occipital views, reduced to the same width, of the skulls of Anomodonts 

 and of Cotylosaurs connected with that group. To show the low position, at 

 the back of the tuber basisphenoidalis, which the fenestra ovalis occupies in 

 these reptiles, its situation is indicated by the stapes. 



A. Seymouria bayloriensis.. • B. Captorhinus sp. 



C. Varanosaurus acutirostris. D. Arctops willistoni. 



E. Diademodon browni. F. Deiopeus leptoceplialus. 



G. Dimetrodon sp. H. Mormosaurus seeleyi. 



A, from text-fig. 2 ; B, from Watson, 1916. C. Restored from the type-skeleton 

 in Munich; D, E, & H, from Watson, 1914; F, modified from Watson, 1916; 

 G, from a skull figured by Case, modified by other material. 



A-E form an approximate morphological series ; F & G represent an aberrant side 

 line arising from C ; and H another distinct line also arising from a form near C. 



