70 



The Tretnadoc 



Fauna 



discovered. 



The "Upper 

 Paradoxides " 

 Fauna of 

 Sweden 

 discovered. 



The 



Holasaphus 



fauna. 



In this table we have been able to present one of the faunas of the 

 European Cambrian, heretofore unrecognized in Eastern Canada, *. e., 

 the Tremadoc fauna of English writers, the Ceratopyge fauna of the 

 Swedes (the Euloma-Niobe fauna of Prof. W. C. Brogger), the Dicello- 

 cephalus fauna of the Mississipi valley. This is based on the discovery of 

 examples of Asaphellus, Parabolinella and Triarthrus in soft shale on the 

 upper part of McLeod brook, in Boisdale district. It happens that at St. 

 John, New Brunswick, the strata which would carry this fauna is in the 

 channel of the river in the upper part of the harbor of St. John, with the 

 Dictyonema fauna on one shore, and the^Tetragraptus fauna on the other, 

 hence it has not been recognized in the St. John Basin. 



Also, the strata of Division 2 of the St. John group, the Johannian 

 division, which we have all along spoken of as the probable place of the 

 Olenus, it would seem will have to be assigned largely to the Paradoxides 

 zone, since Mr. S. Ward Loper, who has been collecting in Cape Breton 

 for the U. S. Geological Survey, has found a Paradoxides, which the 

 writer would regard as a variety of P. Forchhammeri, in the middle of this 

 Division. From this it may be inferred that the two lower bands (a and 

 6) of this division may be assigned to the upper part of the Paradoxides 

 zone. I had found in the Mira river Cambrian a cheek of Paradoxides 

 type in this division, but this alone was not sufficient to determine the 

 presence of this genus in the Johannian division. 



Another important point made during the past season was, that the 

 strata at Youngs point (or McFees point), from which the fossils came, 

 collected by Messrs. Weston and Robert many years ago for the Canadian 

 Geological Survey, and which the author had described, and referred (on 

 account of their resemblance to European forms) to the Ordovician fauna, 

 are in the Etchemiuian or basal Cambrian. The more abundant material 

 gathered since Messrs. Weiton and Robert's visit, show that the species 

 referred by me to Orthisina is a Billingsella. The Holasaphus does not 

 agree with any other basal Cambrian trilobite so far described ; but the 

 Hyolithes may be a form of H. americanus of Billings. 



The exploration in Cape Breton has added greatly to our knowledge of 

 the Etcheminian Faunas. In New Brunswick we had already recognized 

 two lithological divisions in the Etcheminian rocks, of which the lower was 

 bare of any but the lowest forms of life, and worm trails ; but some 

 forms of higher types were found at the base of the upper division 

 Obolus, Hyolithes, Orthotheca. 



In Cape Breton fossils occur at numerous levels throughout the Etche- 

 minian rocks, and even in the Coldbrook volcanics there is a fauna. And 



