[Annals N. Y. Acad. Sci., Vol. XII, No. 2, pp. 41-56, April 22, 1899.] 



A PAL.'EOZOIC TERRANE BENEATH THE 

 CAMBRIAN. 



Geo. F. Matthew. 



(Read November 28, 1898.) 



[Figures 1-4.] 

 CONTENTS. 



page; 



1 . The oldest Palaeozoic Fauna ( Etcheminian ) 41 



2. New Brunswick sections of the terrane 42 



3. Newfoundland sections of the terrane •. 45 



4. Distinctness of the Fauna from the Cambrian 52 



5. Westward extension of the Etcheminian 54 



1. The Oldest Palaeozoic Fauna. 



The author has for some years been aware of the existence 

 of a fauna in the rocks below those that contain Paradoxides and 

 Protolenus^ in New Brunswick, eastern Canada, but the remains 

 of the higher types of organisms found in these rocks were 

 so poorly preserved and so fragmentary, that they gave a very 

 imperfect knowledge of its nature. 



To assure us that there had been living forms in the seas of 

 that early time, other than Protozoa and burrowing worms, we 

 had only the casts of Hyolithidae, the mould of an Obolus, a 

 ribbed-shell similar to Palseacmsea and portions of what appeared 

 to be the arms and bodies of Crinoids. 



These objects were found in the upper division of a series of 

 rocks, immediately subjacent to the Cambrian strata containing 

 Protolenus, etc. As a decided physical break was discovered 

 between the strata carrying the objects named above, and those 



1 Trans. New York Acad. Sci., XIV, 101-153, K- ^-^I, %■ i- 



(41) 



