Named By: Joseph Leidy - 1853?
Classification: Chordata, Mammalia, Carnivora, Amphicyonidae, Amphicyoninae.
Species: Y. gerandiana (type), Y. americana, Y. depereti, Y. ginsburgi, Y. tolosana, Y. valentiana.
Size: Estimated weight around 70 kilograms.
Known locations: Europe, Africa, North America.
Time period: Rupelian of the Oligocene through to the Aquitanian of the Miocene.
Fossil representation: Many specimens.
Dated to the Oligocene period, Ysengrinia is one of the earliest of the larger bear dogs (earlier ones like Cynodictis were smaller) and lived at a time when the world was dominated by creodont predators.