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Pentaceratops sternbergii Osborn 1923 (ceratopsid)

Reptilia - Neornithischia - Ceratopsidae

PaleoDB taxon number: 55033

Alternative combination: Pentaceratops sternbergi

Synonym: Pentaceratops fenestratus Wiman 1930 (taxon 63965)

Full reference: H. F. Osborn. 1923. A new genus and species of Ceratopsia from New Mexico, Pentaceratops sternbergii. American Museum Novitates 93:1-3

Belongs to Pentaceratops according to N. R. Longrich 2014

Sister taxon: Pentaceratops aquilonius

Type specimens:

  • Pentaceratops sternbergii: AMNH 6325, a skull. Its type locality is Pentaceratops type, AMNH loc. 12863, which is in a Campanian terrestrial horizon in the Fruitland Formation of New Mexico.
  • Pentaceratops fenestratus: PMU.R200, R.286, a skeleton. Its type locality is south branch, Meyers Creek, which is in a Campanian terrestrial horizon in the Kirtland Formation of New Mexico.

Ecology: ground dwelling herbivore

Average measurements (in mm): coracoid length 310.0, femur 1080.0 x 200.0, fibula length 730.0, humerus 790.0 x 130.0, radius length 500.0, scapula 950.0 x 165.0, skull length 930.2, tibia 780.0 x 145.0

Estimated body mass: 5.34 tons based on femur length