BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 29, pp. 601-606 December 3o, 19is 



PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 





MESOZOIC HISTORY OF MEXICO, CENTRAL AMERICA, AND 

 THE WEST INDIES ^ 



BY T. W. STANTON 



(Read before the Paleontological Society January 1, 1918) 



CONTENTS 



Page 



Introduction 601 



Triassic 602 



Jurassic 604 



Cretaceous 605 



Introduction 



This resume deals only with those phases of Mesozoic history which 

 have a direct bearing on the biologic relationships of North and Sonth 

 America by indicating on the one hand epochs of probable marine con- 

 nection between the Pacific and the Atlantic through tropical America, 

 and on the other hand epochs of probable land connection between North 

 and South America. The evidence to be presented consists of the distri- 

 bution of the sediments of different epochs on the present land area, their 

 character as marine or continental, and the relationships of the marine 

 faunas found in them. Most of the data are recorded on the Geologic 

 Map of North America compiled by Willis and Stose, and in the litera- 

 ture abstracted by Willis in his Index to the Stratigraphy of North 

 America. These have been supplemented by the consideration of more 

 recent papers by C. Burckhardt, E. Bose, G. R. Wieland, J. P. Smith, and 

 others, and by a few. collections of fossils which have been studied by me. 

 Through the courtesy of Professor Schuehert, I have also had the use of 

 manuscript notes on the stratigraphy of Mexico prepared for him by 

 E. Bose. 



Our knowledge of the character and distribution of the Mesozoic faunas 

 of Mexico has been greatly incj'eased during the last fifteen years by the 



* Manuscript received by the Secretary of the Society August 22, 1918. 



XLV— Bull. Geol. Soc. Am., Vol. 29, 1917 (001) 



