EXPLANATION OF PLATE 3. 



Cymbospondylus ixd-hms Lcidy. 



Superior view of skull, no. 9950. X % 



From the Middle Triassic of West Huniboldt Range, Nevada. 



LEGEND. 



Pm, premaxillary. St, supratemporal. 



M, maxillary. Qj, quadratojugal. 



N, nasal. Q.f., <iuadrate foramen. 



L, lachrymal. Q, (|iiadratc. 



Or, orbit. tio, supraoccipital. 



F, frontal. Bo, basioccipital. 



Pn, pineal foramen. Ft, pterygoid. 



Pr, parietal. Ar, articular. 



Pf, prefrontal and postfrontal. Sa, surangular. 



Pto, postorbital. An, angular. 



J, jugal. Cn, coronoid. 



Sq, squamosal. Pt, pteryyoid. 



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