BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 23, pp. 349-356 JULY 15, 1912 



COEEELATION OF THE PALEOZOIC FAUNAS OF THE 

 EASTPOET QUADEANGLE, MAINE ^ 



BY HENRY SHALER WILLIAMS 



(Read before the Society December 28, 1911) 



CONTENTS 



Page 



Introduction 349 



Structural subdivision of the rocks of tlae Eastport quadrangle 351 



Faunal characteristics of the sediments 352 



Introduction 



The first serious attempt to work out the geology of the Eastport 

 region of Maine Avas made in the summer of 1884 by Prof. N. S. Shaler, 

 then connected with the U. S. Geological Survey. The results of his 

 explorations were published in a paper entitled "Preliminary Eeport on 

 the Geology of the Cobscook Bay District, Maine.^^ ^ At that time there 

 was no detailed map of the region ; the Coast Survey map did not appear 

 until the year 1893. Shaler prepared a small map, giving the outline of 

 the shores, bays, and inlets. In his paper the general northeasterly dip 

 of the sedimentary beds was shown and the general succession of the fos- 

 siliferous beds along a line from the southwest to northeast across the 

 area was established. A large amount of material, mostly in large pieces, 

 was gathered ; the fossils in most cases are casts of the interior or exterior 

 and more or less distorted by compression after fossilization. The iden- 

 tifications were confessedly tentative, but a sufficient number of charac- 

 teristic species were recognized to establish correlation of the faunas 

 with the Clinton-Niagara-Lower Helderberg formations of New York; 

 the uppermost beds on Moose Island were compared with the Devonian 

 shale of Ohio on slender ground. No attempt was made to compare the 

 species with the transatlantic faunas of corresponding age. 



^Manuscript received by the Secretary of the Society March 8, 1912. 



' American Journal of Science, 3d ser., vol. xxxii. .Tuly. ISSG. pp. 35-67. 



XXV— Bull. Geol. Soc. Am., Vol. 23, 1911 (349) 



