titanosaurs hold the world record for the size of a land animal. one place in the argentine had 150 bones from seven titanosaurs. the largest were from an animal 40 metres (~130 feet) long and 20 metres (35 feet) tall. it would have weighed about 77 tonnes. a local farm worker stumbled on the remains in the desert near la flecha, about 250km (135 miles) west of trelew, patagonia. the bbc flew a team out to record the event.