CONTENTS. 



Page. 

 Introduction 3 



Historical review of the Pelycosauria 5 



Systematic revision of the suborder ..........••• 17 



Morphological revision of the suborder 77 



Position and relations of the Pelycosauria • • • • • '57 



Geological and geographical distribution . . • ■ • • '59 



Bibliography 162 



Index 167 



Description of plates ........•■•••••• 169 



1 



