Thickness.—At Mt. Bosworth, 1,360 feet.
Organic Remains.—Upper Cambrian, passing at summit into Ordovician.
Paget Formation
Type Locality.—Southeastern slope of Paget Peak, beneath the Sherbrooke formation, which forms the high cliffs of Paget Peak and Mt. Daly. The Paget formation breaks down more readily than the Sherbrooke, presenting a slightly broken cliff line. The most accessible locality found is on the east face of the west ridge of Mt. Bosworth (Sherbrooke ridge).
Derivation.—From Paget Peak, the type locality.
Character.—Bluish gray and oolitic limestones, usually thin bedded.
Thickness.—At Mt. Bosworth, 360 feet.
Organic Remains.—Upper Cambrian fauna.
Bosworth Formation
Type Locality.—Ridge extending northwest from Mt. Bosworth, and southeast base of Paget Peak and Mt. Daly.
Derivation.—From Mt. Bosworth, the type locality.
Character.—Arenaceous, dolomitic limestones, massive, thin bedded, and shaly, with bands of purple and gray siliceous shales.
Thickness.—At Mt. Bosworth, 1,855 feet.
Organic Remains.—None observed; formation referred to Upper Cambrian.
Eldon Formation
Type Locality.—Upper massive limestones of Castle Mountain, Canadian Rocky Mountains, Province of Alberta, one to two miles north of Eldon Switch, on the Canadian Pacific Railway.
Derivation.—From Eldon, opposite the type locality.
Character.—Massive, arenaceous, dolomitic limestones, with a few bands of purer bluish gray limestone.
Thickness.—In Mt. Bosworth section, 2,733 feet; at Castle Mountain, 2,195 feet.
Organic Remains.—Middle Cambrian.
Stephen Formation
Type Locality.—Bluish gray and greenish gray limestone and shale band about 2,700 feet up above railroad track on the north and east sides of Mt. Stephen, Canadian Rocky Mountains, British Columbia, above Field, on the Canadian Pacific Railway.
