Results: 1 - 3 of 3
Dec 31, 1957
Bulletin
… Lower Cenomanian substage of the Upper Cretaceous. Lithologic sections are … John area. The Lower Cretaceous-Upper Cretaceous boundary occurs at …
Dec 31, 1990
Open File Report
… are contained within the Upper Cretaceous/Tertiary Wapiti Group. …
May 08, 2019
Information Series
… position of some Devonian and Upper Cretaceous units. Also, we chose to …