Genus
Valid Extinct

Edmontonia

Sternberg 1928

Edmontonia is a genus of panoplosaurin nodosaurid dinosaur from the Late Cretaceous Period of what is now western North America. It is named after the Edmonton Formation, the unit of rocks where it was first found.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
16
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Edmontonia
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DSC_0115 © Shriram Rajagopalan from Vancouver, Canada · CC BY 2.0 · Wikimedia
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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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Nodosauridae Family
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Edmontonia Genus
Measurements
Length
6 m ⓘ
Edmontonia longiceps 
6,6 m ⓘ
Mass
1 600 kg ⓘ
Edmontonia longiceps 
3 000 kg ⓘ
Fossil sites 16 geolocated sites
Distribution
Top countries
🇺🇸 United States
11
🇨🇦 Canada
5
Geological formations
Aguja
3
Judith River
3
Hell Creek
2
Denver
2
Bearpaw Shale
1
Matanuska
1
Dinosaur Park
1
St. Mary River
1
Lance
1
Horseshoe Canyon
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
7
Campanian (83.6–72.2 Ma)
9
Species (2)
Denversaurus schlessmani subjective synonym of Edmontonia longiceps 84 Ma
Edmontonia longiceps 84 Ma
Synonyms (2)
Chassternbergia subjective synonym of Edmontonia
Denversaurus subjective synonym of Edmontonia
Images 3
Bibliography
Original description
C. M. Sternberg. 1928. A new armored dinosaur from the Edmonton Formation of Alberta. Transactions of the Royal Society of Canada, series 3 22:93-106
Bibliography (13)
W. W. Stein. 2021. The paleontology, geology and taphonomy of the Tooth Draw Deposit; Hell Creek Formation (Maastrictian), Butte County, South Dakota. The Journal of Paleontological Sciences JPS.C.21:0001:1-108
J. T. Sankey. 2010. Faunal composition and significance of high-diversity, mixed bonebeds containing Agujaceratops mariscalensis and other dinosaurs, Aguja Formation (Upper Cretaceous), Big Bend, Texas. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington
M. T. Carrano. 2005. Fossil Vertebrate Collections, University of California Museum of Paleontology
K. Carpenter and D. B. Young. 2002. Late Cretaceous dinosaurs from the Denver Basin, Colorado. Rocky Mountain Geology 37(2):237-254 DOI ↗
M. J. Ryan and A. P. Russell. 2001. Dinosaurs of Alberta (exclusive of Aves). Mesozoic Vertebrate Life
R. A. Gangloff. 1995. Edmontonia sp., the first record of an ankylosaur from Alaska. Journal of Vertebrate Paleontology 15(1):195-200 DOI ↗
J. E. Storer. 1993. Additions to the mammalian paleofauna of Saskatchewan. Modern Geology 18(4):475-487
K. Carpenter. 1990. Ankylosaur systematics: example using Panoplosaurus and Edmontonia (Ankylosauria: Nodosauridae). Dinosaur Systematics: Approaches and Perspectives DOI ↗
R. T. Bakker. 1988. Review of the Late Cretaceous nodosaurid Dinosauria: Denversaurus schlessmani, a new armor-plated dinosaur from the latest Cretaceous of South Dakota, the last survivor of the nodosaurians, with comments on stegosaur-nodosaur relationships. Hunteria 1(3):1-23
J. Danis. 1986. Quarries of Dinosaur Provincial Park. In B. G. Naylor (ed.), Field Trip Guidebook to Dinosaur Provincial Park, 2 June 1986. Dinosaur Systematics Symposium, Tyrrell Museum of Palaeontology, Drumheller, Alberta
W. Langston. 1975. The ceratopsian dinosaurs and associated lower vertebrates from the St. Mary River Formation (Maestrichtian) at Scabby Butte, southern Alberta. Canadian Journal of Earth Sciences 12:1576-1608 DOI ↗
A. Sahni. 1972. The vertebrate fauna of the Judith River Formation, Montana. Bulletin of the American Museum of Natural History 147(6):321-412
C. M. Sternberg. 1928. A new armored dinosaur from the Edmonton Formation of Alberta. Transactions of the Royal Society of Canada, series 3 22:93-106