CONTENTS. 



Page. 



Letter of transmittal 9 



Preface 11 



Nomenclature of the Eocene and Lower Oligocene formations of the United States 15 



Correlation table of lower Tertiary formations 16 



Age of the lieds in the various States from which collections of corals have been obtained 16 



New Jersey 16 



Maryland and Virginia 17 



South Carolina and Georgia 17 



Alabama, Mississippi, Arkansas, and Louisiana 17 



Texas 17 



California 18 



Stratigraphic and geographic distribution of species 19 



Probable bathyuietric distribution of species 23 



Eocene 25 



Mid way an stage 25 



Midway beds 25 



Sucarnocliee clays and Naheola marls 25 



Chickasawan stage 25 



Nanafalia Bluft' beds 25 



Greggs Landing beds 25 



Bashi or Woods Blutf beds 26 



Hatehetigliee Bluff beds 26 



General conclusions regarding the Midwayan aud Chickasawan stages 26 



Claibornian stage 27 



Lower Claiborne 27 



Alabama, Mississippi, and Louisiana 27 



Texas __ 28 



Shark River beds, New Jersey 29 



Claiborne sands bed 29 



Jacksoniau stage 30 



Lower Oligocene 30 



Vicksburgian stage 30 



Red Bluif beds 30 



Vicksburg beds 30 



Coral limestone at Salt Mountain, near Jackson, Alabama 30 



Localities in Georgia 31 



Corals from the Martinez aud Tejon beds of California 32 



Affinities of the Eocene and Lower Oligocene corals fif the United States for those of other 



countries 32 



Generic affinities of the Eocene coral fauna of the Gulf region with recent fauna- 33 



Morphology of the Madreporarian coral skeleton 34 



Origin of the calcareous deposit 35 



The basal plate 36 



5 



