Albertaceratops (Alberta horned face)
Michael J. Ryan - 2007
Estimated 6 meters long
A. nesmoi (type)
Canada, Alberta - Oldman Formation
Late Cretaceous, 80-75 million years ago
The Albertaceratops (meaning “Alberta horned face”) was a genus belonging to centrosaurine horned dinosaurs of the middle campanian age Upper Cretaceous Oldman Formation of Alberta, Canada.
It was unique in that it combines long brow horns and the skull of a centrosaurusine. It was estimated to be 5.8 meters (19 feet) and 3,500 kg (7,700 pounds). It is recognized by a single, complete skull (TMP.2001.26.1) discovered in August 2001, as well as postcranial and skull fragments.
Additional specimens were found from a bone bed in the Judith River Formation of Montana that is similar with the Oldman Formation, and is distinguished only by the Canadian-US border.
Further research revealed the remains belonged to another centrosaurian called Medusaceratops. The exact name, A. nesmoi, is an abbreviation from Cecil Nesmo, a rancher living in Manyberries, Alberta, a town with less than 100 residents located 71 km to the south to Medicine Hat.