Conodonts of the Hull Formation, Ottawa Group (Middle Ordovician), of the Ottawa-Hull area, Ontario and Quebec

A conodont fauna consisting of ten species and seven form - species is described from the Hull Formation of the Ottawa Group of the Ottawa-Hull area in Ontario and Quebec. The collection of over 10,000 specimens indicates that the Hull conodont fauna is typical of the North American Midcontinent Province, and of the eastern subprovince (Barnes et al. , 1973) , and may be assigned to Fauna 8 of Sweet et al. (1971 ) . In New York and Ontario, Fauna 8 ranges from the uppermost part of the Chaumont Formation to the mid- part of the Kings Fall s Limestone (Schopf , 1966; Sweet et al , 1971) . In terms of North American s t ages, Fauna 8 is of late Porterfieldian through mid-Kirkfieldian age, or approximately late Wlildernessian (Bergstrtlm, 197lb). The Hull Formation is redefined in litho stratigraphic terms.