PLATE 1 
EXPLANATION OF FIGURES 
la Lateral view of endocranial cast of Belodon buceros. After Cope. 
1b Upper view of the same. Both figures X 4. 
ABBREVIATIONS | 
Ep., epiphysis Olf., olfactory tract 
Orb.Pin., orbitopineal process Cb., cerebellum 
Cer., cerebrum II,V, cranial nerves 
2a Upper view of endocranial cast of Diadectes phaseolinus. After Cope 
2b Lateral view of the same. Both figures X 4. 
ABBREVIATIONS 
Olf., olfactory tract Cb., cerebellum 
Cer., cerebrum V, cranial nerve 
Ep., epiphysis Ot., otic tract 
3a Lateral view of endocranial cast of Tyrannosaurus rex. After Osborn. 
3b Upper view of same. Both figures X }. 
ABBREVIATIONS 
Olf., olfactory tract I to XII, cranial nerves 
Cer., cerebrum hi and h2, epiphysis 
Opl., optic lobe 
