Results: 1 - 3 of 3
Dec 31, 1963
Bulletin
… cored sections of the Lower Cretaceous Mannville Group from the … Ellerslie Member as Aptian. The upper 'calcareous' member contains … Albian. The microflora of the upper part of the Mannville Group, …
Sep 26, 2017
Open File Report
… from Lower Jurassic to Lower Cretaceous strata of the southern … of the Jurassic through Lower Cretaceous strata of the Rocky … of the Jurassic through Lower Cretaceous Strata of the Rocky …
Dec 31, 1957
Bulletin
… Lower Cenomanian substage of the Upper Cretaceous. Lithologic sections are … John area. The Lower Cretaceous-Upper Cretaceous boundary occurs at …