EXPLANATION OF PLATE 8. 



Fic.L Posterior part of skull. Cnmptcmiuru.s ampins? Marsh. No. 1887, Yale 

 Museum. i uat. size. External view. 

 2. Explanatory Hgure of same: any, anjiular: d, dentary ; ju, jugal; q, 

 quadrate; qj, quadratojugal ; sur, surangular. 



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