Temporal range: Eocene – Miocene 42–7.2 mya
The Nimravidae is a family in the Carnivora. It is a type of extinct cat-like mammal in the suborder Feliformia. They lived in North America, Europe, and Asia from the Eocene through the Miocene epochs, 42—7.2 million years ago (mya). They lasted for about 35 million years.
The ancestors of nimravids and felids diverged from their common ancestor about 50 mya. Most had muscular, low-slung, catlike bodies, but with shorter legs and tails.
Some nimravids did evolve into large toothed cat-like forms with massive flattened upper canines and mandibular flanges. Others had teeth similar to modern cats, with smaller canines. Others had canines more intermediate relationship between the saber-toothed cats and felids.
Not only did nimravids have varied tooth styles, but they also showed the same range of size size and shape as felids. Some were leopard-sized, others the size of today's lions and tigers, and one had the short face, rounded skull and smaller canines of the modern cheetah.
- PaleoBiology Database: Nimravidae, basic info
- The function of these flanges was to protect the flattened canine teeth.