Fig. 67. Phytosaur skull: Mystriosuchus. />W2, premaxilla; 

 wj, maxilla; na, nasal; /, frontal; p, prefrontal; /, lac- 

 rimal; pj, postfrontal; po, postorbital; pa, parietal; sq, 

 squamosal; qj, quadratojugal; pi, palatine; /, transverse; 

 in, internal nares; en, external nares; pt, pterygoid; bs, 

 basisphenoid; eo, exoccipital. After McGregor. 



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