Eotriceratops xerinsularis

One of the largest known ceratopsians, Eotriceratops could have grown up to about 10 meters (32 ft) in length, slightly larger than the largest Triceratops specimen found.  Granted, the two genera share several similarities not found in any other genera of ceratopsids.  The skull of the animal alone was about 10 ft long, one of the largest of any land animal.  It lived during the Late Cretaceous, around 69-67 mya.  It's remains have been uncovered in Alberta; Canada.