Pachyrhinosaurus is a close relative of the more familiar Triceratops. There are three known species of Pachyrhinosaurus. The type Pachyrhinosaurus Canadensis was discovered in Alberta, Canada in 1946 by Charles Sternberg and named in 1950. Its range included Alaska and Alberta. Pachyrhinosaurus Lakustai was discovered in 1972 by science teacher Al Lakusta. In 2012 a partial skull was found in Alaska and was named Pachyrhinosaurus perotorum after Ross Perot who was a contributor to the museum that sponsored the dig. The big bony boss on the nose distinguishes Pachyrhinosaurus from most ceratopsians.
|Full Name||Pachyrhinosaurus Lakustai|
|Period||Late Cretaceous 73-69 Million Years Ago|
|Size||26 feet (8 meters) long|
|Weight||4 tons / 3.6 metric tons|
|Discoverer||Al Lakusta 1972|