Machairoceratops

Lund et al. 2016

Machairoceratops, previously known as the "Wahweap centrosaurine B", is an extinct genus of centrosaurine ceratopsian dinosaur known from the Late Cretaceous Wahweap Formation of Grand Staircase–Escalante National Monument, southern Utah, United States.

Temporal range

Triassic

Jurassic

Cretaceous

Paleogene

Neogene

252 201 145 66 0 Ma

PBDB occurrences

Group

Dinosaures

Herbivore Ground dwelling Terrestrial

click to enlarge

Holotype cranial Material and Cranial Reconstruction of Machairoceratops cronusi (UMNH VP 20550) gen. et sp. nov. Recovered cranial elements of Machairoceratops in right-lateral view, shown overlain on a ghosted cranial reconstruction (A). The jugal, squamosal and braincase are all photo-reversed for reconstruction purposes. Machairoceratops cranial reconstruction in dorsal (B), and right-lateral (C) views. Green circle overlain on the ventral apex of the jugal highlights the size of the epijugal contact scar (ejcs). Abbreviations: BC, braincase; boc, basioccipital; bpt, basipterygoid process; ej, epijugal; ejcs, epijugal contact scar; j, jugal; lpr, lateral parietal ramus; lsb, laterosphenoid buttress; m, maxilla; n, nasal; o, orbit, oc, occipital condyle; oh, orbital horn; on, otic notch; p, parietal; pf, parietal fenestra; pm, premaxilla; po, postorbital; poc, paroccipital process; p1, epiparietal locus p1; sq, squamosal. Scale bars = 0.5 m. © Eric K. Lund, Patrick M. O’Connor, Mark A. Loewen, Zubair A. Jinnah · CC BY 2.5 · Wikimedia

PBDB ↗ Wikipedia ↗

Classification

Dinosauria Unranked clade

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Ornithischia Unranked clade

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Neornithischia Unranked clade

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Pyrodontia Unranked clade

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Cerapoda Unranked clade

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Marginocephalia Unranked clade

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Ceratopsia Suborder

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Ceratopsidae Family

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Centrosaurinae Subfamily

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Machairoceratops Genus

Fossil sites 1 geolocated sites

Distribution

Top countries

🇺🇸 United States

Geological formations

Wahweap

Temporal distribution

Campanian (83.6–72.2 Ma)

Species (1)

Machairoceratops cronusi 84 Ma

Images 4

Bibliography

Original description

E. K. Lund, P. M. O'Connor, and M. A. Loewen, Z. A. Jinnah. 2016. A new centrosaurine ceratopsid, Machairoceratops cronusi gen et sp. nov., from the Upper Sand Member of the Wahweap Formation (Middle Campanian), southern Utah. PLoS ONE 11(5):e0154403:1-21 DOI ↗

Bibliography (1)