page_title: Machairoceratops
section_title: Discovery
hierarchical_section_title: Machairoceratops / Discovery
caption_attribution_description: Left squamosal of Machairoceratops cronusi (UMNH VP 20550) gen. et sp. nov. Machairoceratops squamosal in lateral (A), medial (B), and caudal (C) views. Abbreviations: jp, jugal process; on, otic notch; pog, paroccipital groove; pop, postorbital process. Scale bar = 10 cm.
context_page_description: Machairoceratops is an extinct genus of centrosaurine ceratopsian dinosaur known from the Late Cretaceous Wahweap Formation of Grand Staircase-Escalante National Monument, southern Utah, United States.
context_section_description: It contains a single species, M. cronusi, first described and named in 2016 by Eric K. Lund, Patrick M. O’Connor, Mark A. Loewen and Zubair A. Jinnah. The generic name is derived from Greek machairis, meaning "bent sword", in reference to its unique frill ornamentation showing two forward curving horns on the frill's uppermost part, and Latinized Greek ceratops, meaning "horned-face", which is a common suffix for ceratopsian genera names. The specific name cronusi refers to Cronus, a Greek god who deposed his father Uranus by castrating him with a sickle or scythe based on the mythology, and as such is shown carrying a curved bladed weapon. Machairoceratops is known solely from the holotype UMNH VP 20550, found in 2006, which is housed at the Natural History Museum of Utah. It is represented by a partial skull including two curved and elongate eyesocket horncores, the left jugal bone, a nearly complete but slightly deformed braincase, the left squamosal bone, and a parietal bone complex and its unique horn ornamentation, all collected in association.
caption: Left squamosal bone
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