MAY 31 1901 



CONTENTS. 



Page. 



Letter of transmittal 7 



Introduction and aoknowledgments 9 



pyxplanatory notes 11 



Clayaification 12 



Systematic position 12 



History of classification 13 



Rclieme of classification of Paleozoic bryozoa 14 



Terminology 1" 



Diagnoses of suborders, families, and genera 19 



Alphabetic list of genera showing systematic position 57 



Alphabetic list of invalid generic names 61 



Distribution 62 



Geographic 62 



Geologic 65 



List of localities 68 



Table showing the occurrence of bryozoa by formations 73 



Lists of species 74 



Chazy 74 



Trenton 74 



Cincinnati 80 



Silurian 85 



Devonian 91 



Mississippian 101 



Carboniferous 108 



Tables of genera and species 110 



In the groups of the Trenton periotl 110 



In the groups t f the Cincinnati period 112 



In the periods of Paleozoic time 115 



General notes 121 



Value of bryozoa in stratigraphic work 121 



Collection and study 121 



Making of sections 122 



Bibliography and index 125 



Chronological catalogue of papers containing descriptions and illustrations 



of American Paleozoic bryozoa 125 



Chronological catalogue of papers containing descriptions and illustrations 

 of American Mesozoic and Tertiary bryozoa, with lists of species 



described therein 151 



Catalogue of the genera and species of American Paleozoic l)ryozoa, 



including bibliography and synonymy 161 



Index of specific names 441 



Index of authors and their papers 463 



List of papers treating of bryozoa 468 



The foregoing list classified 562 



5 



