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Pachyrhinosaurus is a genus of Centrosaurine Ceratopsian that lived in North America during the Late Cretaceous

Description
Pachyrhinosaurus autapomorphies

Species

 * P. canadensis (Sternberg, 1950)
 * P. lakustai (Currie, Langston & Tanke, 2008)
 * P. perotorum (Fiorillo & Tykoski, 2012)
 * P. "youngi" (Kruk, 2015, Thesis)
 * P. sp. nov.? TMP 2002.76.1

Phylogeny
This cladogram was recovered by Kruk (2015) in her thesis on P. "youngi".