Thaumastocyonini is an extinct tribe of large, carnivorous mammals (bone-crushers) known as bear dogs, of the family Amphicyonidae, subfamily Amphicyoninae, which inhabited Europe during the Miocene living from ~16.9—7.25 Ma and existed for approximately . It was originally erected to include only the genus Agnotherium,L. Ginsburg. 1977. Les carnivores du Miocene de Beni Mellal (Maroc). Geologie Mediterraneene and is no longer used.L. Werdelin and S. Peigne. 2010. Carnivora. In L. Werdelin, W. J. Sanders (eds.), Cenozoic Mammals of Africa pp. 603-657 [M. Uhen/M. Uhen]
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