Muttaburrasaurus

Muttaburrasaurus was about 7 to 8 metres long. It weighed around 2.8 tonnes, though some recent estimates suggest it could have been much heavier, up to about 8854 kg.123

Muttaburrasaurus was mainly a plant-eater, eating ferns, cycads, club-mosses and podocarps. Some scientists have suggested it might sometimes have eaten meat, based on the shape of its teeth.12

Muttaburrasaurus may have been able to move on either its two back legs or on all four legs. It probably walked on all fours when feeding and ran on two legs.14

Muttaburrasaurus was first discovered near the town of Muttaburra in central Queensland, Australia. It is Australia's most widely distributed dinosaur, with fossils found in both Queensland and New South Wales.21

Muttaburrasaurus lived during the Early Cretaceous period, about 110 million years ago. The original skeleton was found in rocks that formed about 105 to 103 million years ago.24

The bony bump on its snout may have been used to make calls or for its sense of smell. Some scientists thought it was a resonating chamber for sounds, but later research suggests it was just part of the elongated snout.43

Muttaburrasaurus was about 8 metres long, which is smaller than T. rex, which could be over 12 metres long. However, some recent estimates suggest Muttaburrasaurus could have weighed as much as some smaller T. rex specimens.3

Yes, Muttaburrasaurus had back teeth that were tightly packed to form shearing blades, but it had no front teeth. Instead, its upper and lower jaws were covered with a beak made of keratin.4