Hunt, Robert M.2011Fig. 54 in Evolution Of Large Carnivores During The Mid-Cenozoic Of North America: The Temnocyonine Radiation (Mammalia, Amphicyonidae)10.5281/zenodo.4610916Fig. 54. Associated humerus and ulna of (A) Mammacyon ferocior and (B) Canis lupus showing elongation of the ulna (and radius) and pronounced reduction of the distal ulna in these cursors.