Genus
Valid Extinct

Rubeosaurus

McDonald and Horner 2010

Styracosaurus is an extinct genus of herbivorous dinosaur from the Late Cretaceous of North America. It had four to six long parietal spikes extending from its neck frill, a smaller jugal horn on each of its cheeks, and a single horn protruding from its nose, which may have been up to 60 centimeters long and 15 centimeters wide. The function or functions of the horns and frills have been debated for many years.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
2
Group
Dinosaures
Herbivore Ground dwelling Terrestrial
Rubeosaurus
click to enlarge
Holotype of Styracosaurus on display at Canadian Museum of Nature © LittleLazyLass · CC BY-SA 4.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Ornithischia Unranked clade
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Neornithischia Unranked clade
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Pyrodontia Unranked clade
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Cerapoda Unranked clade
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Marginocephalia Unranked clade
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Ceratopsia Suborder
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Ceratopsidae Family
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Centrosaurinae Subfamily
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Centrosaurini Unranked clade
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Rubeosaurus Genus
Fossil sites 2 geolocated sites
Distribution
Top countries
🇺🇸 United States
2
Geological formations
Two Medicine
2
Temporal distribution
Campanian (83.6–72.2 Ma)
2
Species (1)
Rubeosaurus ovatus 84 Ma
Images 1
Bibliography
Original description
A. T. McDonald and J. R. Horner. 2010. New material of "Styracosaurus" ovatus from the Two Medicine Formation of Montana. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington
Bibliography (2)
A. T. McDonald and J. R. Horner. 2010. New material of "Styracosaurus" ovatus from the Two Medicine Formation of Montana. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington
C. W. Gilmore. 1930. On dinosaurian reptiles from the Two Medicine Formation of Montana. Proceedings of the United States National Museum 77(16):1-39 DOI ↗