Wow, I didn't know that movie was based on anything historical, fact or fiction. Thanks for the post, and welcome

But, in the records of cryptozoology, there are indications that perhaps all land mesonychids did not become extinct. Things that sound like they might be hoofed predators are reported from places such as South America, where there is a beast called the tapire-iauara. The horned cats reported from islands near Java could be mesonychid predators. That region of the world is where many of the world's new animals are discovered, and islands are often known to preserve living fossils. In contrast to this, Europe is that last place we would expect to see a surviving mesonychid, but a strange hoofed predator was the object of an extended scare in France, this creature was dubbed the Beast of Gevaudan and was thought to be a strange sort of werewolf in local folklore.