Also known as Phorusrhacids, these nightmare creatures grew up to ten feet tall and weighed 200 lb, and they could hunt you down by chasing you across the South American or Antarctic plains with ...

Like all phorusrhacids, Titanis had elongated hind limbs, a thin pelvis, proportionally small wings, and a large skull with a hooked beak. Estimates placed Titanis at 1.4 to 2 meters (4.6 to 6.6 ft) ...