CONTENTS. 



GEN^ERAL SUMMARY OF THE MONOGRAPH. _ 



Page. 



Acknowledgments 11 



Bibliography 13 



Synonymy, tabulated alphabetically by genera, subgenera, species, and varieties, with present references. ... 27 



Geographic and stratigraphic distribution, by species zoologically arranged 98 



Geographic distribution, by continents, geologic provinces, and States or countries 114 



Stratigraphic distribution by States or countries, with typical or general sections, correlating localities and fossils . 123 



Habitat, alphabetic list of genera and subgenera, giving data on 160 



Localities, by number, with lists of fossils and reference to position in stratigraphic tables 161 



Terminology adopted for the monograph 291 



Definitions or glossary 292 



The shell, structural features 296 



Evolution, schematic diagram of, for all genera and subgenera 317 



Classification, table and analysis 321 



Description of genera and species ' 327 



CONTENTS IN DETAIL. 



Introduction 11 



Preparation and scope 11 



Acknowledgments '. 11 



Historical data 13 



Bibliography : 13 



Synonymic references 2'' 



List, by genera, subgenera, species, and varieties, of references in synonymy, with present reference of each. 27 



Geologic data 98 



General geographic and stratigraphic distribution 98 



Distribution by species 98 



General geographic and stratigraphic distribution of the Cambrian and Ordovician Brachiopoda. . 98 



Summary of Cambrian Brachiopoda 110 



Summary of Ordovician Brachiopoda 113 



General summary of Cambrian and Ordovician Brachiopoda 113 



Detailed geographic distribution 114 



Cambrian Brachiopoda 114 



North American species ' 114 



European species 120 



Asiatic species 121 



South American species 122 



Australian species 122 



Ordovician Brachiopoda 122 



North American species 122 



European species 123 



Detailed stratigraphic distribution of Cambrian and Ordovician Brachiopoda 123 



Alabama 124 



Alberta 124 



Arizona 124 



Bohemia - 124 



British Columbia: Mount Bosworth 125 



California 131 



Cape Breton and New Brunswick 1 131 



Colorado 135 



Denmark 135 



England, Scotland, and Wales 135 



Finland '. 136 



Georgia 136 



Germany 136 



Idaho 136 



Iowa 136 



Labrador • 136 



Maryland -' 136 



5 



