Leptoceratops

Description

Leptoceratops est un genre éteint de dinosaures cératopsiens primitifs qui vivait au Crétacé supérieur en Amérique du Nord occidentale. On en a retrouvé des crânes dans l'Alberta, au Canada et au Wyoming. Il pouvait probablement se tenir droit et courir sur ses pattes de derrière. Leptoceratops mesurait environ 2 mètres de long et pouvait peser de 68 à 200 kilos.

Information(s)

Source: The Paleobiology Database

Attibution: Brown 1914¹⁸⁶⁴⁵
Statut: Valide
Nom commun: Tête à corne mince
Longueur (en m): ?
Largeur (en m): ?
Hauteur (en m): ?
Poids (en m): de ? à ?
Environnement de découverte: terrestrial
Mode de vie: terrestrial
Mode de locomotion: actively mobile
Vision: ?
Alimentation: herbivore
Mode de reprodution: oviparous, dispersal=direct/internal,mobile
Classification: Leptoceratopsidae >> Neoceratopsia >> Ceratopsia >> Marginocephalia >> Cerapoda >> Genasauria >> Ornithischia >> Dinosauria
Période: Maastrichtian (de -72.20 Ma à -66.00 Ma)

Espèce(s):
- Leptoceratops gracilis (Valide)¹⁸⁶⁴⁵

Specimen(s):

Leptoceratops gracilis: PU 18133 - femur, tibia
Leptoceratops gracilis: NMC 8887 - femur, tibia, fibula
Leptoceratops gracilis: NMC 8888 - femur, tibia, fibula
Leptoceratops gracilis: NMC 8889 - femur, tibia, fibula
Leptoceratops cerorhynchus recombined as Montanoceratops cerorhynchus: holotype Amer. Mus. No. 5464 - femur, tibia, fibula
Leptoceratops gracilis: holotype AMNH 5205 - scapulocoracoid, humerus, ulna, radius, tibia
Détail des Spécimens

Autre(s) Taxon(s) trouvés dans la litterature:
- Leptoceratops
- Leptoceratops cerorhynchus n. recombined as Montanoceratops cerorhynchus
- Leptoceratops gracilis
- Leptoceratopsidae
Découverte(s): 14 occcurrences
Ouvrir - Fermer
- Canada
  - Alberta
    - ?
      - Formation Scollard
        Leptoceratops: ? ³⁰⁰⁶
        Leptoceratops gracilis: AMNH 5205: scapulocoracoid, humerus, ulna, radius, tibia ¹⁸⁶⁴⁵
        Leptoceratops gracilis: NMC 8887: femur, tibia, fibula NMC 8888: femur, tibia, fibula NMC 8889: femur, tibia, fibula ¹⁸⁵⁷⁹
      - Formation Willow Creek
        Leptoceratopsidae: ? ³³⁴¹⁵
- Mongolie
  - Dornogov
    - ?
      - Formation Baruungoyot
        Leptoceratopsidae: ? ⁸¹⁸³⁹
- Suède
  - Skåne
    - ?
      - Formation ?
        Leptoceratopsidae: ? ²⁴⁹⁶²
        Leptoceratopsidae: ? ²⁴⁹⁶²
- États-Unis
  - Montana
    - Carter
      - Formation Hell Creek
        Leptoceratops gracilis: ? ²⁴⁸³²
        Leptoceratops gracilis: ? ²⁴⁸³²
    - Glacier
      - Formation St. Mary River
        Montanoceratops cerorhynchus identifié comme Leptoceratops cerorhynchus n. sp.: Amer. Mus. No. 5464: femur, tibia, fibula ¹⁴⁷⁶⁹
  - North Carolina
    - Sampson
      - Formation Tar Heel
        Leptoceratopsidae: ? ⁵⁹³²²
  - South Dakota
    - Butte
      - Formation Hell Creek
        Leptoceratops: ? ⁸⁰⁶²⁵
  - Wyoming
    - Park
      - Formation "Lance"
        Leptoceratops gracilis: PU 18133: femur, tibia ⁹²³⁴
    - Teton
      - Formation Pinyon Conglomerate
        Leptoceratops: ? ¹⁴⁴⁸⁹
Historique des modifications:

Référence	Type	Partie	Dimension (en cm)	Lieu de découverte
PU 18133		femur	length: 257	Collection: Princeton Leptoceratops site- Lieu: US, Wyoming, Park
PU 18133		tibia	length: 385	Collection: Princeton Leptoceratops site- Lieu: US, Wyoming, Park
NMC 8887		femur	length: 230	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8887		tibia	length: 240	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8887		fibula	length: 225	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8888		femur	length: 265	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8888		tibia	length: 280	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8888		fibula	length: 260	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8889		femur	length: 270	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8889		tibia	length: 290	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
NMC 8889		fibula	length: 280	Collection: northeast of Elnora (NMC)- Lieu: CA, Alberta,
Amer. Mus. No. 5464	holotype	femur	length: 346	Collection: 3 miles west of Buffalo Lake- Lieu: US, Montana, Glacier
Amer. Mus. No. 5464	holotype	tibia	length: 355	Collection: 3 miles west of Buffalo Lake- Lieu: US, Montana, Glacier
Amer. Mus. No. 5464	holotype	fibula	length: 318	Collection: 3 miles west of Buffalo Lake- Lieu: US, Montana, Glacier
AMNH 5205	holotype	scapulocoracoid	length: 425	Collection: 3 miles above Tolman Ferry (190 ft level) [AMNH]- Lieu: CA, Alberta,
AMNH 5205	holotype	humerus	length: 290	Collection: 3 miles above Tolman Ferry (190 ft level) [AMNH]- Lieu: CA, Alberta,
AMNH 5205	holotype	ulna	length: 224	Collection: 3 miles above Tolman Ferry (190 ft level) [AMNH]- Lieu: CA, Alberta,
AMNH 5205	holotype	radius	length: 167	Collection: 3 miles above Tolman Ferry (190 ft level) [AMNH]- Lieu: CA, Alberta,
AMNH 5205	holotype	tibia	width: 117	Collection: 3 miles above Tolman Ferry (190 ft level) [AMNH]- Lieu: CA, Alberta,

Pas de modification récente.

Publication(s)

La base comprend 12 publication(s).

Source: The Paleobiology Database

↑^{1 2 3}B. Brown. 1914. Leptoceratops, a new genus of Ceratopsia from the Edmonton Cretaceous of Alberta. Bulletin of the American Museum of Natural History 33(36):567-580
↑¹L. S. Russell. 1987. Biostratigraphy and paleontology of the Scollard Formation, Late Cretaceous and Paleocene of Alberta. Royal Ontario Museum Life Sciences Contribution 147:1-23 (https://doi.org/10.5962/bhl.title.52245)
↑¹C. M. Sternberg. 1950. Leptoceratops, the most primitive horned dinosaur, from the Upper Edmonton of Alberta. Transactions of the Royal Society of Canada, series 3 44:229
↑¹P. J. Makovicky. 2010. A redescription of the Montanoceratops cerorhynchus holotype with a review of referred material. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington
↑¹M. Son, Y.-N. Lee, and B. Zorigt, Y. Kbayashi, J.-Y. Park, S. Lee, S.-H. Kim, K. Y. Lee. 2022. A new juvenile Yamaceratops (Dinosauria, Ceratopsia) from the Javkhlant Formation (Upper Cretaceous) of Mongolia . PeerJ 10:e13176:1-44 (https://doi.org/10.7717/peerj.13176)
↑^{1 2}J. Lindgren, P. J. Currie, and M. Siverson, J. Rees, P. Cederström, F. Lindgren. 2007. The first neoceratopsian dinosaur remains from Europe. Palaeontology 50(4):929-937 (https://doi.org/10.1111/j.1475-4983.2007.00690.x)
↑^{1 2}C. J. Ott. 2007. Cranial anatomy and biogeography of the first Leptoceratops gracilis (Dinosauria: Ornithischia) specimens from the Hell Creek Formation, southeast Montana. Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs
↑¹B. Brown and E. M. Schlaikjer. 1942. The skeleton of Leptoceratops with the description of a new species. American Museum Novitates 1169:1-15
↑¹N. R. Longrich. 2016. A ceratopsian dinosaur from the Late Cretaceous of eastern North America, and implications for dinosaur biogeography. Cretaceous Research 57:199-207 (https://doi.org/10.1016/j.cretres.2015.08.004)
↑¹W. 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
↑¹J. H. Ostrom. 1978. Leptoceratops gracilis from the "Lance" Formation of Wyoming. Journal of Paleontology 52(3):697-704
↑¹M. C. McKenna and J. D. Love. 1970. Local stratigraphic and tectonic significance of Leptoceratops, a Cretaceous dinosaur in the Pinyon Conglomerate, northwestern Wyoming. United States Geological Survey Professional Paper 700(D):D55-D61

Galerie d'images

Source: Wikimédia

Leptoceratops gracilis, a ceratopsian from the Late Cretaceous of...

Leptoceratops gracilis forelimb.