Edmontosaurus

Edmontosaurus skeleton at the Ocford Natural History Museum, UK (Wikimedia)

Edmontosaurus skeleton at the Oxford Natural History Museum, UK (Wikimedia)

Edmontosaurus was one of the most common dinosaurs in America. It walked on two legs but could also walk on all fours and had a mouth packed with hundreds of small teeth except for the front of the jaws which had a beak.

Discovery: It was named in 1917. Two skeletons have been found with skin preserved.

Height: 3.5m

Length: 13m

Weight: 3400kg

Where it lived: Edmontosaurus is found throughout North America.

When it lived: Edmontosaurus lived in the Late Cretaceous of North America, about 76 to 65 million years ago.

What it ate: It ate plants. Bits of conifers have been found in its stomachs such as needles, twigs and seeds.

Weapon of choice: Edmontosaurus was big, probably too big for smaller predators but not so for T.rex. Palaeontologists believe that Edmontosaurus lived in herds and that there was safety in numbers.

Weakness: Too small and with no weaponry, Edmontosaurus was as easy as prey got for T.rex.

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