Location : N. America

Edmontonia is a member of the armored dinosaur family that includes Ankylosaurus  It did not have a clubbed tail like the better-known Ankylosaurus  but it had long, nasty spikes on its sides and thick, bony armor on its back and head. It also had a very long tail for this kind of dinosaur.

Edmontonia is one of the better-known nodosaurs, with several nearly complete specimens. Discovered in 1924, the genus was not named until many years later. Some material attributed to this genus is being debated as belonging to a new genus called Denversaurus. However, this is not yet widely accepted.