Genus

Valid Extinct

Avaceratops

Dodson 1986

Avaceratops is a genus of small herbivorous ceratopsian dinosaurs which lived during the late Campanian in what are now the Northwest United States. Most fossils come from the Judith River Formation.

Temporal range

Triassic

Jurassic

Cretaceous

Paleogene

Neogene

252 201 145 66 0 Ma

PBDB occurrences

Group

Dinosaures

Herbivore Ground dwelling Terrestrial

click to enlarge

Squamosal of Avaceratops lammersi. © Rivera-Sylva, H.E.; Hendrick, B.P.; Dodson, P. · CC BY 4.0 · Wikimedia

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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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Nasutoceratopsini Unranked clade

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Avaceratops Genus

Fossil sites 3 geolocated sites

Distribution

Top countries

🇺🇸 United States

🇨🇦 Canada

Geological formations

Judith River

Oldman

Temporal distribution

Campanian (83.6–72.2 Ma)

Species (1)

Avaceratops lammersi 84 Ma

Bibliography

Original description

P. Dodson. 1986. Avaceratops lammersi: a new ceratopsid from the Judith River Formation of Montana. Proceedings of the Academy of Natural Sciences of Philadelphia 138(2):305-317

Bibliography (2)

M. A. Loewen and J. J. W. Sertich. 2023. Campanian centrosaurid ceratopsian diversity and regional endemism in southern Laramidia. 14th Symposium on Mesozoic Terrestrial Ecosystems and Biota. The Anatomical Record 306 (S1)

P. Dodson. 1986. Avaceratops lammersi: a new ceratopsid from the Judith River Formation of Montana. Proceedings of the Academy of Natural Sciences of Philadelphia 138(2):305-317