Genus
Valid Extinct

Einiosaurus

Sampson 1994
Etymology Reptile buffle

Einiosaurus is a genus of herbivorous centrosaurine ceratopsian dinosaur from the Upper Cretaceous of northwestern Montana. The name means 'bison lizard', in a combination of Blackfeet Indian eini and Latinized Ancient Greek sauros; the specific name (procurvicornis) means 'with a forward-curving horn' in Latin. Einiosaurus is medium-sized with an estimated body length at 4.5 metres (15 ft).

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
3
Group
Dinosaures
Herbivore Ground dwelling Terrestrial
Einiosaurus
click to enlarge
Reconstructed skull of Einiosaurus procurvicornis on display at the Natural History Museum of Los Angeles County. © Jonathan Chen · 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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Pachyrhinosaurini Unranked clade
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Einiosaurus Genus
Fossil sites 3 geolocated sites
Distribution
Top countries
🇺🇸 United States
3
Geological formations
Two Medicine
3
Temporal distribution
Campanian (83.6–72.2 Ma)
3
Species (2)
Einiosaurus procurvicornis 84 Ma
Styracosaurus makeli replaced by Einiosaurus procurvicornis 84 Ma
Images 1
Bibliography
Original description
S. D. Sampson. 1994. Two new horned dinosaurs (Ornithischia: Ceratopsidae) from the Upper Cretaceous Two Medicine Formation, Montana, USA. Journal of Vertebrate Paleontology 14(3, suppl.):44A
Bibliography (3)
M. T. Carrano. 2006. Fossil Vertebrate Collections, Museum of the Rockies
S. D. Sampson. 1995. Two new horned dinosaurs from the upper Cretaceous Two Medicine Formation of Montana; with a phylogenetic analysis of the Centrosaurinae (Ornithischia: Ceratopsidae). Journal of Vertebrate Paleontology 14(5):743-760 DOI ↗
S. D. Sampson. 1994. Two new horned dinosaurs (Ornithischia: Ceratopsidae) from the Upper Cretaceous Two Medicine Formation, Montana, USA. Journal of Vertebrate Paleontology 14(3, suppl.):44A