C. A. White—Jurassic Strata of North America. 229 
The discovery of this great vertebrate fauna seemed to set- 
tle the question of the Jurassic age of the formation in the 
minds of paleontologists generally; but Mr. J. iteaves, 
P: aleontologist to the Canadian Geological Survey, has lately 
published in one of the volumes of that survey, views which 
“i entirely adverse to those hitherto held by all others.* In 
at work he describes and figures some fossils which were col- 
ected by Mr. James Richardson and Dr. G. M. Dawson at 
Laps Charlotte Islands, on the west coast of British Columbia. 
130 <a are reported to have come from a series of strata some 
#4 eet in thickness, all of which are referred to the Creta- 
ie ‘i period. The principal fossiliferous horizon of this series _ 
C Out its middle, and it bears an abundant and characteristic 
retaceous molluscan fauna, which is regarded by Mr. Whiteaves 
os refers them, following which are my remarks, based upon 
Matton of his specimens and a considerable familiarity 
the type specimens of those species. 
. Belemnites densus Meek & Hayden. 
. Lyosoma Powelli White. 
- Myacites (Pleuromya) subcompressa Meek. 
- Astarte Packardi White 
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0 (.) Belemnites densus. Mr. Whiteaves's collection contains 
: ed One specimen which he refers to this species, and that is 
Shy Volume i, Part ITT, Mesozoic Fossils. Dawson Brothers: Montreal, April, 
