CONTENTS: 



Page 



Introduction 3 



Stratigraphic Summary .'. 6 



Fauna of the Machiakou or Actinoceras limestone 7 



Lower Ordovician 



Peilintze Limestone 10 



Liangchiashan Limestone 11 



I Ascription of Species 12 



Anthozoa 12 



Brachiopoda 15 



Pelecypoda 1 ) 



Gastropoda 20 



Cephalopoda 3G 



Holochoanites 30 



Phylogenetic significance of the siphuncle of the Holochoanites ">3 



Orthochoanites 03 



Cyrtochoanites (l -' 



Trilobita '>'' 



B i bl i ograph y 90 



List of Chinese localities referred to in the text, arranged alphabetically under tin- 

 several provinces -'9 



Explanation of Plate? 



