what was the largest hot in prehistoric times?
It was once estimated at 17 and 15 metres (49 ft) in length, but later estimates put it at around 12.2 meters. 1  The largest known prehistoric snake is Titanoboa cerrejonensis, estimated at 12.8 m (42 ft) in length and 1135 kg in weight. 2  The largest known land lizard is probably Megalania at 7 metres (23 ft) in length.