Rare, 3.6" Fossil Bear Dog (Daphoenus) Mandible - South Dakota

Rare, Fossil Bear Dog (Daphoenus) Mandible - South Dakota #143958

This is a rare, 3.6" long mandible (lower jaw) of Daphoenus sp., a Bear Dog from the Brule Formation of Pennington County, South Dakota. There are four complete teeth and three partial teeth still within this mandible. There is a repaired crack through the left side of this jaw which runs through a tooth that required repair as well. Rock has been left between the two sides of the mandible for structural purposes.

This comes from a small collection (eight pieces) of bear dog material we recently acquired. This is the only material we've ever had available.

It comes with an acrylic display stand.

Daphoenus is an extinct genus of "Bear Dog" that inhabited North America from the Middle Eocene to the Middle Miocene, existing for approximately 21 million years. Bear dogs earned their name for their mix of dog and bear-like characteristics. They were about the size of modern day coyotes and had short legs optimized for quick sprints as opposed to long distance running, indicating that they ambushed their prey instead of chasing them down. Fossil footprints suggest that like present day bears, these animals walked in a flat-footed way. It's believed that they dug burrows as shelter for themselves and their offspring.