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EOTRICERATOPS

a herbivorous ceratopsian dinosaurs from the Late Cretaceous of North America.
Pronunciation: EE-oh-tri-SEH-ruh-tops
Meaning: Dawn three-horned face
Author/s: Wu et al. (2007)
Synonyms: See below
First Discovery: Alberta, Canada
Discovery Chart Position: #635

Eotriceratops xerinsularis

(Dawn Triceratops of Dry Island Buffalo Jump)Etymology
Eotriceratops is derived from the Greek "eos" (dawn), "tri" (three), "ceras" (horn) and "ops" (face).
The species epithet, xerinsularis, is derived from the Greek "xèros" (dry) and the Latin "insula" (island), referring to the Dry Island Buffalo Jump Provincial Park where its remains were found.
Possible synonyms
Ojoceratops fowleri? (Sullivan and Lucas, 2010)
"Triceratops xerinsularis" (Paul, 2010)
Discovery
Eotriceratops was discovered in the Horseshoe Canyon Formation (Edmonton Group) near the western bank of the Red Deer River in Dry Island Buffalo Jump Provincial Park, 70 km northwest of Drumheller, Alberta, Canada, by Barnum Brown in August 1910. Distracted by the many shiny Albertasaurus things in the area, Brown chose not to collect the specimen, but he did report its discovery in his 1910 field notes. Unaware that it had already been discovered, a team from the Royal Tyrrell Museum of Palaeontology and Canadian Museum of Nature headed to Dry Island Buffalo Jump in 2001, and camp cook, Mr. Glen Guthrie, found it again.
The holotype (RTMP 2002.57.5) is an incomplete and disarticulated skeleton, including a partial skull, neck and back vertebrae, some ribs, ossified ligaments, and other fragments.
Preparator
M. Mitchell.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Maastrichtian
Age range: 68 mya
Stats:
Est. max. length: 9 meters
Est. max. hip height: ?
Est. max. weight: 12 Kg
Diet: Herbivore
References
• Wu X-C, Brinkman DB, Eberth DA and Braman DR (2007) "A new ceratopsid dinosaur (Ornithischia) from the uppermost Horseshoe Canyon Formation (upper Maastrichtian), Alberta, Canada". Canadian Journal of Earth Sciences, 44(9): 1243–1265. DOI: 10.1139/E07-011.
• Paul GS (2010) "The Princeton Field Guide to Dinosaurs".
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To cite this page:
Atkinson, L. "EOTRICERATOPS :: from DinoChecker's dinosaur archive".
›. Web access: 07th Mar 2026.
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