Xll CONTENTS 



PACB 



Antarctica, Australia, and South America ....... 75 



Australasia or Notogjea 77 



South America or Neogaea . ■ 78 



General Conclusions 79 



7. PALiEOGEOGRAPHY 80 



CHAPTER II. THE EOCENE 



Pal^ogeography of Eocene Europe 83 



Pal^eogeography of North America 84 



Atlantic Border Region .......... 84 



Mountain Region ............ 85 



Mountain Basin Deposits ......... 86 



Volcanic Materials 90 



Pacific Coast. Close of the Cretaceous 92 



Late Cretaceous and Early Eocene Flora 93 



Alternate Union and Disunion of European and North American Life 95 



Faunal Phases 95 



The Archaic Mammals . 96 



L The Basal Eocene Life of Europe and America .... 97 



Close of the Age of Reptiles and Beginning of the Age of Mammals . 97 



Seashore Transition Beds in Europe 99 



Continental Transition Beds in America 100 



Animals of the First Faunal Zone 102 



Basal Eocene, First Faunal Phase ........ 102 



Basal Eocene of Europe, Thanetian Formations 103 



Basal Eocene of North America 104 



Puerco Life 106 



Torrejoii Life ........... 107 



IL The Lower Eocene Life of Europe and America . . . .111 



Lower Eocene, Second Faunal Phase . . . . . . . .112 



Lorver Eocene Life of Europe . . . . . . . . .113 



Sparnacian Life, Coryphodon Zone 114 



Lower Ypresian Formations . . . . . . . . .115 



Upper Ypresian Formations 117 



Lower Eocene Life of North America, Wasatch, and Wind River . . . 118 



Formations of the Coryphodon Zone .119 



Wasatch Life 124 



Wind River 128 



Fishes of the Green River Shales 135 



IIL Middle and Upper Eocene Life of Europe and North America . 137 



Third Faunal Phase 138 



Middle and Upper Eocene Life of Europe ....... 140 



Geological Succession 143 



Mammalian Succession .......... 146 



Collective Fauna of the Phosphorites of Quercy ..... 151 



Middle and Upper Eocene Life of the Rockij Mountain Region . . . 153 



Geology of the Middle Eocene 157 



