The Parasaurolophus was an interesting dinosaur with a strangely shaped head that featured a curved crest. It was a herbivore that weighed around 2.7 tons and could walk on two legs or four.
There has been much debate about the functions of the crest but these days most scientists agree that it helped Parasaurolophus identify male and females, increased hearing ability (acoustic resonance) and also helped regulate body temperature (thermoregulation).
Dimensions: 25.3 x 4.7 x 10.8 cm
Weight: 265g