EXPLANATION OF PLATE XXXYVII. 
1. Top view of skull of Baptanodon discus Marsh(No. 878). One fifth natural size. Restored. _ 
art., articular ; ex.oce., exoccipital ; fr., frontal ; na., nasal ; nar., nares; occ.c., occipital condyle ; 
pa., parietal ; pin., pineal foramen ; pmx., premaxilla; prf., prefrontal ; ptf, postfrontal ; s.ag., 
surangular ; s.occ., supraoccipital ; s.¢., supratemporal ; s.t,f., supratemporal fossa ; sq., squamosal. 
2. Inferior view of skull of Baptanodon discus (No. 603). One fifth natural size. Restored. 
ag., angular ; art., articular ; b.oce., basioccipital ; b.s., basisphenoid ; cor., coronoid ; d., dentary ; 
ipt., interpterygoid vacuity ; occ.c., occipital condyle; pl., palatine; prs., presphenoid ; pt., ptery- 
goid ; spl., splenial ; v., vomer. 
BA() 
