Genus
Valid Extinct

Euoplocephalus

Lambe 1910
Etymology Tête bien protégée

Euoplocephalus is a genus of large herbivorous ankylosaurid dinosaurs, living during the Late Cretaceous of Canada. It has only one named species, Euoplocephalus tutus.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
18
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Euoplocephalus
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Ornithischia Unranked clade
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Parapredentata Unranked clade
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Saphornithischia Unranked clade
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Prionodontia Unranked clade
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Genasauria Unranked clade
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Thyreophora Unranked clade
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Thyreophoroidea Superfamily
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Eurypoda Unranked clade
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Ankylosauria Unranked clade
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Euankylosauria Unranked clade
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Ankylosauridae Family
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Ankylosaurinae Subfamily
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Euoplocephalini Tribe
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Euoplocephalus Genus
Measurements
Length
5,6 m ⓘ
Euoplocephalus tutus 
5,5 m ⓘ
Mass
2 000 kg ⓘ
Euoplocephalus tutus 
2 500 kg ⓘ
Fossil sites 18 geolocated sites
Distribution
Top countries
🇨🇦 Canada
11
🇺🇸 United States
6
🇨🇳 China
1
Geological formations
Dinosaur Park
8
Judith River
3
Two Medicine
2
Bearpaw Shale
1
Subashi
1
Oldman
1
Horseshoe Canyon
1
St. Mary River
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
2
Campanian (83.6–72.2 Ma)
16
Species (1)
Euoplocephalus tutus 84 Ma
Synonyms (1)
Stereocephalus replaced by Euoplocephalus
Images 2
Bibliography
Original description
L. M. Lambe. 1910. Note on the parietal crest of Centrosaurus apertus and a proposed new generic name for Stereocephalus tutus. The Ottawa Naturalist 24:149-151
Bibliography (11)
P. Penkalski. 2018. Revised systematics of the armoured dinosaur Euoplocephalus and its allies. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 287(3):261-306 DOI ↗
T. Miyashita, V. M. Arbour, and L. M. Witmer, P. J. Currie. 2011. The internal cranial morphology of an armoured dinosaur Euoplocephalus corroborated by X-ray computed tomographic reconstruction. Journal of Anatomy 219:661-675 DOI ↗
M. T. Carrano. 2005. Fossil Vertebrate Collections, University of California Museum of Paleontology
P. J. Currie. 2005. History of research. Dinosaur Provincial Park: A Spectacular Ancient Ecosystem Revealed. Indiana University Press, Bloomington
W. P. Coombs. 1995. Ankylosaurian tail clubs of middle Campanian to early Maastrichtian age from western North America, with description of a tiny club from Alberta and discussion of tail orientation and tail club function. Canadian Journal of Earth Sciences 32:902-912 DOI ↗
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 ↗
A. R. Fiorillo. 1989. The vertebrate fauna from the Judith River Formation (Late Cretaceous) of Wheatland and Golden Valley counties, Montana. Mosasaur 4:127-142
P. M. Galton and H.-D. Sues. 1983. New data on pachycephalosaurid dinosaurs (Reptilia: Ornithischia) from North America. Canadian Journal of Earth Sciences 20(3):462-472 DOI ↗
R.-j. Zhai, J.-j. Zheng, and Y.-s. Tong. 1978. [Stratigraphy of the mammal-bearing Tertiary of the Turfan Basin, Sinkiang]. Reports of Paleontological Expedition to Sinkiang. III. Permian and Triassic Vertebrate Fossils of Dzungaria Basin and Tertiary Stratigraphy and Mammalian Fossils of Turfan Basin 13:68-81
C. W. Gilmore. 1923. A new species of Corythosaurus with notes on other Belly River Dinosauria. The Canadian Field-Naturalist 37:46-52 DOI ↗
L. M. Lambe. 1902. New genera and species from the Belly River Series (mid-Cretaceous). Geological Survey of Canada Contributions to Canadian Palaeontology 3(2):25-81