Genre

Valide Éteint

Achelousaurus

Sampson 1994

Achelousaurus est un genre fossile de dinosaures de la famille des cératopsidés qui vivait en États-Unis durant le Crétacé supérieur. Selon Paleobiology Database en 2025, l'espèce type et seule espèce du genre est Achelousaurus horneri.

Plage temporelle

Trias

Jurassique

Crétacé

Paléogène

Néogène

252 201 145 66 0 Ma

Occurrences PBDB

Groupe

Dinosaures

Herbivore Vivant au sol Terrestre

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Achelousaurus horneri skull, collected in Glacier County, Montana, at the Museum of the Rockies in Bozeman, Montana. The Ceratopsidae are those dinosaurs with head frills. There are three large subgroups of Ceratopsidae: Centrosaurinae, Ceratopsinae, and Chasmosaurinae. The Triceratopsini are a "tribe" of the Chasmosaurinae -- a genus so vast that it gets the special name "tribe". The Pachyrhinosaurini are a "tribe" within the Centrosaurinae. Achelousaurus is a genus within the Pachyrhinosaurini. So far, only three skulls and some limited skeletal remains have been collected anywhere in the world -- and all of them in Montana. Their bony frills are quite similar to the Styracosaurus albertensis, although their other skull features (such as big bony bosses on the nose and behind the eyes) are not. © Tim Evanson from Washington, D.C., United States of America · CC BY-SA 2.0 · Wikimedia

Légende en anglais — traduction française non disponible.

PBDB ↗ Wikipedia ↗

Classification

Dinosauria Clade non classé

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Ornithischia Clade non classé

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Neornithischia Clade non classé

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Pyrodontia Clade non classé

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Cerapoda Clade non classé

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Marginocephalia Clade non classé

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Ceratopsia Sous-ordre

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Ceratopsidae Famille

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Centrosaurinae Sous-famille

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Pachyrhinosaurini Clade non classé

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Achelousaurus Genre

Sites de découverte 2 sites géolocalisés

Répartition

Principaux pays

🇺🇸 États-Unis

Formations géologiques

Two Medicine

Distribution temporelle

Campanien (83.6–72.2 Ma)

Espèces (1)

Achelousaurus horneri 84 Ma

Bibliographie

Description originale

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

Bibliographie (2)

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