Paper No. 9
Presentation Time: 11:00 AM
PRELIMINARY TENTACULITID BIOSTRATIGRAPHY WITHIN THE CONODONT BIOSTRATIGRAPHIC FRAMEWORK OF THE MALIGNE, PERDRIX, AND MOUNT HAWK FORMATIONS, FRASNIAN (UPPER DEVONIAN), CANADIAN ROCKY MOUNTAINS, ALBERTA
Frasnian tentaculitids from the Maligne, Perdrix, and Mount Hawk formations from two localities, NE of Mt. Thorton in the de Smet Range in Jasper National Park and Mt. Gregg near Cadomin, Alberta, approximately 50 km to the east, include eight species of Homoctenus, one species of Costulatostyliolina, and one species of Viriatella preserved as recrystallized fragmented conchs. These taxa are identified in open nomenclature as their relationship to other Frasnian tentaculidis is unclear. The lowest conodont collections are from the Maligne Formation, assigned to the “insita Fauna” and likely uppermost Givetian or lowest Frasnian. Subsequent strata contain a diverse fauna of Ancyrodella, Ancyrognathus, Icriodus, Mesotaxis, Palmatolepis, and Polygnathus that allow recognition of MN zones 4 through 12 in the non-reef facies in the Perdrix and Mt. Hawk. Within the Perdrix and Mount Hawk tentaculitids can be used for correlation at two levels in the sections.