EARLY DEVONIC HISTORY OF NEW YORK AND EASTERN NORTH AMERICA 6/ 



and a 111 pi a, Spirifer r a r i c o s t a. If anything, the fauna has a truer 

 expression of earlier age, or at least its early expression is less complicated 

 with later suggestions. 



The Mtir allies 



North of the North beach is a high escarpment facing Malbay, whose 

 rocks rise to a vertical hight from the water of 600 feet, and reach their 

 boldest expression in the Red peak, where they drop off abruptly to the 

 Grande Coupe, an evident fault displacement. 



The strata of these Murailles stand at a wholly different angle from 

 those we have been describing and they have been palpably downthrown 

 from an original continuit)' with the latter. 



Cape Barre beds. The southernmost point of this sea cliff is Cape 

 Barre which shelters the beach. The strata here are thin, sand)-, blue gray 

 limestones with intercalated shale, the rock becoming reddish at the top 

 beneath the soil cap. They dip northeast 30° to 40°, which is an angle not 

 reproduced in any of the strata elsewhere exposed, and their attitude toward 

 the Perce strata farther north leads to the inference that these rocks are 

 normally subjacent to the latter and have been separated therefrom by the 

 downthrow of the superjacent mass. These Cape Barre beds, so far as 

 exposed, may attain a thickness of 75 to 100 feet. Their relations with the 

 strata at Mt Joli are determinable from no structural relation exhibited, for 

 they are separated from the latter by the long interval of the North beach. 

 These beds contain fossils, but very sparsely ; a few Lingulas and an 

 Ambocoelia-like brachiopod probably allied to Spirifer modestus 

 Hall, which is a Helderberg species, also a small corrugated Leptostrophia 

 like L. oriskania Clarke, and a Conularia closely comparable to the 

 species we have identified as C. 1 ata from Grande Greve; but the age and 

 position of the beds are decisively indicated by the presence of a species of 

 the trilobite Dicranurus. 



This fossil is of more than ordinary interest. The genus Dicranurus 

 has been described heretofore only from two geologic formations, the Hel- 

 berberg (New Scotland beds and Coej'mans limestone) of eastern New 



