Locality	Layer
	Canada, Ontario, Arkona, 2.5 mls E of	Widder Shale
	Canada, Ontario, Arkona, Rock Glen, 1.25 mls NE of	Widder Shale
	Canada, Ontario, Thedford, Hill No.4, 6 mls NW of	Widder Shale
	Canada, Ontario, Thedford, Kings Highway 21 intersection	Widder Shale
	Canada, Ontario, Thedford, Kings Highway 82, 1 mile E of	Widder Shale