Species
Valid Extinct

Achelousaurus horneri

Sampson 1994

No Wikipedia summary available.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
2
Group
Dinosaures
Herbivore Ground dwelling Terrestrial
🦴
PBDB ↗
Classification
Dinosauria Unranked clade
›
Ornithischia Unranked clade
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Neornithischia Unranked clade
›
Pyrodontia Unranked clade
›
Cerapoda Unranked clade
›
Marginocephalia Unranked clade
›
Ceratopsia Suborder
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Ceratopsidae Family
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Centrosaurinae Subfamily
›
Pachyrhinosaurini Unranked clade
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Achelousaurus Genus
›
Achelousaurus horneri Species
Fossil sites 2 geolocated sites
Distribution
Top countries
🇺🇸 United States
2
Geological formations
Two Medicine
2
Temporal distribution
Campanian (83.6–72.2 Ma)
2
Bibliography
Original description
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
Bibliography (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