87 
Fauna of the Green Beds 
There is only a sparse fauna in the Green beds. On Castle river 
(DC1) they carry Belemnites and a rib and neural spine of an ichthyosaur, 
a large, marine, fish-like reptile. The plesiosaur bones collected by Lambe 
were also probably from this locality. In the brickyard quarry at Blair- 
more they carry Belemnites and “Turbo” sp. This fauna is Jurassic and 
may not be much later than the C. munda fauna. Its stratigraphic position 
is approximately 700 feet above the base of the formation. 
FAUNA OF THE “PASSAGE BEDS” 
Lying between the Fernie and Kootenay formations are the “Passage 
beds” which consist of about 180+ feet of thin-bedded sandstone and shale. 
In the railway section on the south slope of Grassy mountain they occur 
about 200 feet above the greenish and grey shales carrying the C . munda 
fauna with a gap of concealed strata between; some of the thickness of 
concealed strata, however, may be accounted for by increase due to over- 
thrust faulting. They also outcrop at the foot of the southeastern slope 
of Bluff mountain, north of the Rocky Mountain sanatorium. They overlie 
the green bed in the brickyard quarry at Rlairmore. They are found on 
Castle river below the Coal Securities cabins where they overlie the “green 
bed” and outcrop for some distance downstream. They are found in the 
Hell Gate canyon of Castle river, where a gradual transition may be traced 
into the basal beds of the Kootenay formation. 1 They carry a depauperate 
and poorly preserved fauna with both marine and non-marine elements. 
The fauna includes indeterminate pelecypods at Grassy mountain, shark 
teeth and fish bones and scales north of the Rocky Mountain sanatorium, 
and fishfin rays, a fish-like tooth, and a caudal vertebra of an herbivorous 
dinosaur?, on Castle river. The relation of these beds to the Fernie and 
Kootenay formations will be discussed under correlation. 
1 McLearn, F, H.: Geol. Surv., Canada, Sum. Kept. 1915, pp. 111-112 (1915). 
