Edmontonia was an armoured dinosaur, a part of the nodosaur family from the Late Cretaceous Period. It is named after the Edmonton Formation (now the Horseshoe Canyon Formation), the unit of rock it was found in.

Edmontonia was bulky and tank-like at roughly 6.6 m (22 ft)[1] long and 2 m (6 ft) high.[citation needed] It had small, ridged bony plates on its back and head and many sharp spikes along its back and tail. The four largest spikes jutted out from the shoulders on each side, two of which were split into subspines in some specimens.[1] Its skull had a pear-like shape when viewed from above.[1] (Compare 26 feet long and 8 feet high for the M1 Abrams army tank.)

The Land Before Time

It is seen in The Great Valley Adventure opening narration, eating plants a few meters away from the Plateosaurus, joined by a Triceratops and a Stegosaurus.

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