CONTENTS 



PAGE 



Introduction 7 



Chapter I. Systematic Review of the Occurrence of the Eurypterida in 



each Period from the Pre-Cambric through the Permic n 



Introductory n 



North America 11 



Pre-Cambric n 



Cambric 13 



Ordovicic 13 



Siluric 15 



Lower Siluric or Niagaran 15 



Middle Siluric or Salman 17 



Upper Siluric or Monroan 19 



Devonic 22 



Mississippi 23 



Carbonic 23 



Great Britain 25 



Siluric 25 



Lower Siluric or Llandovery — Wenlock 25 



Upper Siluric or Ludlow 26 



The Lanarkian 28 



Devonic 28 



Mississippic or Calciferous 28 



Carbonic or Carboniferous 30 



Bohemia 30 



Siluric 30 



Lower Siluric or E ei and E &2 of Barrande 30 



Upper Siluric or F f 1 or Barrande 32 



Carbonic 32 



Coal measures of Bohemia 32 



Belgium 32 



Devonic 32 



Upper Devonic 32 



Baltic Islands and Russia 33 



Siluric 33 



Upper Siluric of Gotland 33 



Upper Siluric of Oesel 34 



Austro-Russian Border Lands 35 



Siluric 35 



Upper Siluric of Podolia and Galicia 35 



Devonic 35 



Middle Devonic of Galicia 35 



3 



