Daphoenus is correctly mentioned as a basal bear-dog.
It’s important to note, though, that bears are not related to dogs in the large reptile tree (LRT, 1619+ taxa). Cats and hyaenas are closer to dogs and some bear-dogs are more closely related to hyaenas and hyaenodonts (marsupials) in the LRT.
Daphoenus vetus (Leidy 1853; Middle Eocene to Middle Miocene, 37-16mya). Like related dogs (genus: Canis) this mid-sized predator dug burrows for offspring nesting and hiding sites. Here it nests basal to Amphicyon major, a bear-dog related to dogs.
Leidy J 1853. Observations on a collection of fossil Mammalia and Chelonia from the Mauvaises Terres of Nebraska. Proc. Acad. Nat. Sci. Philad., 6: 392–394.