Genre
Valide Éteint

Montanoceratops

Sternberg 1951
Étymologie Tête cornue du Montana

Montanoceratops est un genre fossile de dinosaures cératopsidé de la famille des Leptoceratopsidae, du Crétacé supérieur ayant vécu dans ce qui est aujourd'hui le Canada. Le type et seule espèce est Montanoceratops cerorhynchus.

Plage temporelle
Trias
Jurassique
Crétacé
Paléogène
Néogène
252 201 145 66 0 Ma
Occurrences PBDB
3
Groupe
Dinosaures
Herbivore Vivant au sol Terrestre
Montanoceratops
cliquer pour agrandir
Montanoceratops cerorhynchus (Brown & Schlaikjer, 1942) - fossil ceratopsian dinosaur skeleton from the Cretaceous of Montana, USA. (MOR 542, Museum of the Rockies, Bozeman, Montana, USA) The species name is sometimes incorrectly spelled "cerorhynchos". The original publication spells it "cerorhynchus". The genus name is sometimes incorrectly spelled "Montanaceratops". Ceratopsians are the "horned dinosaurs". They were large, quadrupedal, herbivorous dinosaurs having a beaked skull and a frill - an extension of bone behind the skull that partially covered the neck. Ceratopsian dinosaurs are known from the Jurassic and Cretaceous. The last members of the group died out at the Cretaceous-Tertiary boundary, 65 million years ago. This is a partial skeleton of a juvenile Montanoceratops, a ceratopsian from the near-latest Cretaceous of western North America. This type of ceratopsian lacked facial horns. From exhibit signage: Sixty-eight million years ago, when the horned dinosaurs Triceratops and Torosaurus inhabited the coastal plain near the inland ocean, primitive "horned" dinosaurs named Montanoceratops lived in uplands near the young Rocky Mountains. These little protoceratopsians fed on plants with slicing teeth and narrow beaks similar to their giant three-horned relatives. Classification: Animalia, Chordata, Vertebrata, Reptilia, Archosauria, Dinosauria, Ornithischia, Marginocephalia, Ceratopsia, Leptoceratopsidae Stratigraphy: St. Mary River Formation, Maastrichtian Stage, Upper Cretaceous Locality: Little Rocky Coulee, north of the town of Cut Bank, eastern Glacier County, northwestern Montana, USA Info. at: en.wikipedia.org/wiki/Montanoceratops © James St. John · CC BY 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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Neoceratopsia Infraordre
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Leptoceratopsidae Famille
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Montanoceratops Genre
Sites de découverte 3 sites géolocalisés
Répartition
Principaux pays
🇺🇸 États-Unis
2
🇨🇦 Canada
1
Formations géologiques
St. Mary River
2
Horseshoe Canyon
1
Distribution temporelle
Maastrichtien (72.2–66 Ma)
2
Campanien (83.6–72.2 Ma)
1
Espèces (1)
Montanoceratops cerorhynchus 84 Ma
Images 4
Bibliographie
Description originale
C. M. Sternberg. 1951. Complete skeleton of Leptoceratops gracilis Brown from the Upper Edmonton Member on Red Deer River, Alberta. National Museum of Canada Bulletin 123:225-255 DOI ↗
Bibliographie (3)
P. J. Makovicky. 2001. A Montanoceratops cerorhynchus (Dinosauria: Ceratopsia) braincase from the Horseshoe Canyon Formation of Alberta. Mesozoic Vertebrate Life, D. H. Tanke and K. Carpenter (eds.), Indiana University Press, Bloomington
B. J. Chinnery and D. B. Weishampel. 1998. Montanoceratops cerorhynchus (Dinosauria: Ceratopsia) and relationships among basal neoceratopsians. Journal of Vertebrate Paleontology 18(3):569-585 DOI ↗
B. Brown and E. M. Schlaikjer. 1942. The skeleton of Leptoceratops with the description of a new species. American Museum Novitates 1169:1-15