5 –D1) or just below the unconformity in the uppermost Hornby Bay Group (now Hornby Bay Basin – Rainbird and Davis, 2022) (Irvine, 1970c; Irvine and Baragar, 1972; Kerans, 1983). Dismal Lakes sandstones have been recrystallized and grade downwards towards the Muskox roof contact into ...