Nimravidae

Nimravidae is an extinct family of carnivorans, sometimes known as false saber-toothed cats, whose fossils are found in North America and Eurasia. Not considered to belong to the true cats (family Felidae), the nimravids are generally considered closely related and classified as a distinct family in the suborder Feliformia. Fossils have been dated from the Middle Eocene through the Late Oligocene epochs (Bartonian through Chattian stages, 41.03–25.9 million years ago), spanning about 15.13 million years.

The barbourofelids, which were formerly classified as a subfamily of the Nimravidae, were reassigned to their own distinct family Barbourofelidae in 2004. However in the 2020s, some studies suggest the barbourofelids are a branch of the nimravids, suggesting that this debate might not be settled yet. If accepted, the family would have persisted until the Late Miocene, and would extend their spatial distribution to Africa.