mm
Valleys the two followine units are observed below the tpark! siltstones:
'Wlegstones! (at top)
“Toad formation

'Flagstones! is merely a convenient name for the higher of the above
two units, and is only partly descriptive. It consists of flaggy, thin-
bedded calcareous, grey siltstones; fine, calcareous, massive sandstones;
and limestones.» The massive sandstones and limestones of this unit are
present in the Mount Wrisht section on Halfway Riven but have not been
observed in Hage Creek seation in Sikanni Chief Valley; these massive
beds recall a similar lithology in the 'Grey beds!. It is probable that
the name "Toad" can be carried south at least as far as Halfway Valley,
and applied to the dark siltstones and limestones that underly the
'Flagstones! and carry the Beyrichites-Gymnotoceras fauna, Jt is not known
as yet what underlies the Toad formation in these valleys. el

| the Triassic section in Prophet River basin has not been Sento
the writer, but fossil collections received from there suggest that it is
much like that in Sikanni Chief and Halfway Valleys.

Farther north, in Tetsa and Liard River Valleys, the Pardonet beds and
the upper part of the 'Grey beds! have disappeared; the decapitated 'Grey
beds! are incorporated in the Liard formation; the 'Dark siltstones! and
'Flagstones! have not. been recognized but equivalent beds may be included
in the lower part of the Liard formation; and the Toad Perma tion is present
an taaentaie by the shales of the Grayline formation, definitely exposed
on Liard River and possibly also on Tetsa River. The seotion is as follows:

Liard formation (at top)
Toad formation
Grayling formation

The Liard formation is made up of massive, grey, calcareous, fine
mana tenee and limestones, and carries the Nathorstites fauna; the Toad
formation is composed of dark shales, shaly siltstones, and Tinea tones
and carries the Wasatchites and Beyrichites— ymnotoceras faunas; and the
Grayling formation consists of shale. The names Liard, Toad, and Grayling

have all been introduced by E.D. Kindle for the Liard River section.