128 
Plate XV 
Skull of Thespesius saskatchcwanenxis 
Type No. 8509, Geol. Surv., Canada 
Viewed from the left side. About J natural size. Dn, dentary; Ept, ectopterygoid ; F 
frontal: J, jugal; L, lachrymal; M, maxilla; N, nasal; P, parietal; Pal, palatine; Pmx, premaxilla 
Par, postorbital; Prf, prefontal; Pi, pterygoid; Q, quadrate; Qj, quadra tojugal; Sa, surangular 
Sq, squamosal. (Page 77.) 
