Ornithocheirus (from Greek "ορνις", meaning bird, and "χειρ", meaning hand) was a huge pterosaur from the early Cretaceous period of Europe and South America. Along with Quetzalcoatlus, several large bone fragments from the Santana Formation of Brazil indicate that Ornithocheirus may have been one of the largest pterosaurs that ever lived, with a wingspan reaching almost 12 m (40 ft). If these poorly preserved remains do indeed belong to Ornithocheirus, it would have been approximately 3.50 m (11.5 ft) long (1.50 m (5 ft) of which belonged to the head) and stood approximately 3 m (10 ft) tall when on the ground on all fours. Despite this, the creature would only have weighed as much as a grown man (70 kg), thanks to hollow bones filled with air sacks. Ornithocheirus was the earliest giant