Species
Extinct

Monoclonius nasicornus

subjective synonym of Styracosaurus albertensis
(Brown 1917)
This taxon is considered subjective synonym of of the valid taxon Styracosaurus albertensis according to the Paleobiology Database. See the page for Styracosaurus albertensis →
Bibliography
Original description
B. Brown. 1917. A complete skeleton of the horned dinosaur Monoclonius, and description of a second skeleton showing skin impressions. Bulletin of the American Museum of Natural History 37(10):281-306