CONTENTS 



INTRODUCTION 



PHYLUM III. 



Vermes (Worms) .... 



PAGE 



Definition and Scope of Paleon tology ..... 1 



PHYLUM I. 



Protozoa . . . . . . . . .17 



PHYLUM IL 



Coelenterata (Zoopliytes) . . . . • • .46 



. 135 



PHYLUM IV. 



ECHINODERMATA . . . . • • • .143 



PHYLUM V. 



MOLLUSCOIDEA . . . • • • • .314 



PHYLUM YL 

 Mollusca ......... 421 



PHYLUM VIL 



Arthropoda (Articiüates) ....... 690 



INDEX 823 



xi 



