Two multituberculate taxa (Mammalia: Allotheria) occur in the Lac Pelletier Lower Fauna, Late Eocene (Duchesnean), Swift Current Plateau, Saskatchewan. Ectypodus lovei is known from Uintan to Chadronian faunas of Wyoming, Montana, and Saskatchewan. All Uintan to Chadronian specimens previously identified as Ectypodus sp. are referred to Ectypodus lovei. A second ?neoplagiaulacid, known only from Lac Pelletier, is the largest reported Middle or Late Eocene multituberculate.

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