Acritarchs and Chitinozoa from the lower 1300 ft (400 m) of the Eastcan et al. Freydis B-87 well, Labrador Shelf, indicate that these strata accumulated in a marine setting during Late Ordovician time. Five or more other exploratory wells on the Labrador Shelf and the Grand Banks of Newfoundland also have encountered Ordovician rocks.

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