AOS

Garbutt formation of Jurassic or early Cretaceous age. Light miles to the southwest, the Toad Fy Nt gg increases to an estimated, 1,800 feet in thickness, and is everlain by m:ssive calcareous sandstones of the Triassic , Liard formation, bapetce to have a minimum thickness of 600 feet. At

Hell Gate, beds fairly hizh in the Liard formation are exposed; they consist of thick, calcareous, fine sandstones and limestones, and contain 'Coenothyris! sp., Daonella sp-, Qstrea atsina McLearn, Nathorstites mecorinelli Whiteaves, and N. meconnelli var. lenticularis Whiteaves. At the same locality McConnell (1891) collected the following: Terebratula liardensis Whiteaves

and Dawsonites canadensis Whiteaves .-

At the lower end of a-canyon- west of Hell Gate, McConnell reported

Terebratula liardensis Whiteaves, Trigonodus ?_productus Whiteaves,

)

Margarita triassica Whiteaves and Nathorstites mcconnelli Whiteaves. Four

or five miles west of this is the Rapids of the Drowned, where McConnell

collected and Whiteaves identified Spiriferina borealis Whiteaves, Terebratula

lairdensis Whiteaves, Monotis ovalis Whiteaves (from an earlier fauna?),

'Daonella lommeli Wissmann (= D. nitanae), Halobia occidentalis Whiteaves, \Nautilus! lairdensis Whiteaves, Nathorstites meconnelli Whiteaves and

Dawsonites canadensis Whiteaves.

CORRELAT ION The Problem _ It has been possible to correlate, with at least some degree of sales mine of the Nriassic faunas of northeastern British Columbia with those in other parts of the world, and so determine their age. This, unfortunately, is not true of the Nathorstites fauna, the age of which, in the opinion of the writer, Vee yet to be satisfactorily established. In this vreliminary revort nothing more is attemoted than a brief statement of the here involved and a brief review of the evidence. Most European geologists have accepted the Karnian or early Upper

Triassic age originally provosed by. Boehm for the Nathorstites-bearing fauna’ of Bear Island. It is inferred that Spath (1934) questions the

Karnian datins. It has seemed to the writer that the evidence furnished