The Andrewsarchus or Androsarcus, was considered the largest carnivorous mammal history, but that position was occupied not alone. Along with this there is another giant carnivorous mammal, called Megistotherium (and some experts say it could even be larger than the Andrewsarchus). The Megistotherium was a terrible predator, a predator who struck fear Miocene to the titanic mastodons (found fossilized bones of mastodons with Megistotherium marks indicating that hunting for food).
The Megistotherium belonged to the family of Hyaenodontidae, a family of large predators, strong, aggressive and courageous. Predators that were in the top of the food chain before the mega saber-toothed cats like, or the greatest, the cave lion.
The Megistotherium lived in what is now Europe, Africa and Asia. As large as the current bison, weigh up to 1500 kg (3300 lb) and a height to the shoulders of more than 1.5 meters long and 3.5 (a white bear almost never reaches 1000 kg (2200 lb) and is 2.5 meters long). The dimensions of the skull were Megistotherium up to 1 meter long (similar to Androsarcus) and his jaw with a force of enormous pressure, harbored very powerful teeth can grind the hardest parts of prey such as bones or hooves. Do not forget that the family is synonymous Hyaenodontidae hyena's tooth, and these (the hyenas) are known for the strength of their jaws and teeth trituratodo. To get an idea, your name, Megistotherium, means "the biggest beast crushed bones."