Arsinoitherium has one scary skull
When I initially saw this skull I though it was a fake Kaiju from Pacific Rim. Maybe even that big bastard from Avatar. This scary skull is far from fake and actually belongs to a Arsinoitherium. This was a massive elephant like herbivore that has been extinct for 27 – 36 million years. Yes, this was a real animal.
When they were flesh and blood they resembled a rhinoceros. The skull is far more sinister than the artist renderings of what the creature could have looked like.
Read more about this fascinating creature on WIKI