BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 19, pp. 403-474, PLS. 21-30 NOVEMBER 30, 1908 



PALEOZOIC AND MESOZOIC OF CENTKAL WYOMmO 



BY N. H. DARTON^ 



{Read by title before the Society December 29, 1907) 



CONTENTS 



rage 



Introductory 405 



General geology 40(5 



General stratigraphy 400 



Cambrian system 408 



Dead\YOod formation '408 



General relations 408 



Rattlesnake mountains , 409 



Wind River mountains 400 



Owl Creek mountains 409 



Fossils , 410 



Ordovician system 410 



Bighorn limestone 410 



General relations 410 



Wind River moimtains 410 



Owl Creek mountains 411 



Fossils and age. 411 



Carboniferous system 412 



Madison limestone 412 



General relations 412 



Wind River mouuta ins 412 



Owl Creek mountains 412 



Rattlesnake mountains-Shirley hills 412 



Fossils 418 



Amsden formation 418 



General relations 418 



Owl Creek mountains 418 



Wind River mountains 414 



Rattlesnake mountains and eastward 414 



Fossils and age 414 



Tensleep sandstone 41 .5 



General relations 415 



Owl Creek mountains 415 



' Published by permission of the Director of the U. S. Geological Survey. 

 Manuscript received by the Secretary of the Society September 21, 1908. 



XXXIX— Bull. Geol. Soc. A.m.. Vol. 19, 1907 (408) 



