j'T^^ ' 
No. 12.— THE SUTTON JURASSIC OF THE VANCOUVER 
GROUP, VANCOUVER ISLAND.^ 
BY C. H. CLAPP AND H. W. SHIMER, 
Contents. 
Page. 
Introduction 425 
Location and occurrence 425 
Description of fossils 429 
Conclusions as to age 436 
Introduction. 
The fossils described here were collected by C. H. Clapp in the 
summers of 1908 and 1909, while making a reconnaissance geological 
survey of southern Vancouver Island for the Geological Survey of 
Canada. 
The beds in which the fossils occur have been named the Sutton 
formation from Sutton Creek Which empties into the Cowichan Lake, 
on the southern shore of which the fossils were found. The Sutton 
formation is a member of the Vancouver Group as defined by George 
M. Dawson.- 
The fossils as determined by both authors prove to be a unique 
fauna. It has few or no affinities, so far as known, in North America, 
l)ut is more closely related to the Rhaetic of central Europe, the 
Jurassic of western and central Europe, and Cutch Jurassic of India. 
Location and Occurrence. 
The fossils described below were found on the shore of Cowichan 
Lake, Vancouver Island. Cowichan Lake is one of the larger lakes 
of Vancouver Island situated in the center of the southern part, 
about sixty miles northwest of Victoria. The fossil-bearing beds 
occur on the south shore of the lake, about eight miles from the 
eastern end. They are almost directly south of Cottonwood Creek, 
' Published by permission of the Director of the Geological Survey of Canada. 
2 G. M. Dawson. Report on a Geological Examination of the Northern Pait of 
Varcouver Island and Adjacent Coasts. Ann. Rep. Geol. Surv. Canada, 1886, p. 10 B . 
