Crittendenceratops (meaning "horned face from the Fort Crittenden Formation") is a genus of horned centrosaurine ceratopsid dinosaur from the late Campanian Fort Crittenden Formation of Arizona. It contains a single species, C. krzyzanowskii, and represents the first species of dinosaur from the Fort Crittenden Formation to receive a formal scientific name.

Crittendenceratops
Temporal range: Campanian, 73 Ma
Life reconstruction of C. kryzanowskii
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Ornithischia
Clade: Neornithischia
Clade: Ceratopsia
Family: Ceratopsidae
Subfamily: Centrosaurinae
Tribe: Nasutoceratopsini
Genus: Crittendenceratops
Dalman et al., 2018
Species:
C. krzyzanowskii
Binomial name
Crittendenceratops krzyzanowskii
Dalman et al., 2018

Description

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Size of Crittendenceratops compared to a human

Crittendenceratops is distinguished by forward-curving, hook-like flanges located along the central portion of the top of the frill, "extensive" epiparietals located along the sides of the parietal portion of the frill, a thickening of the frill in the parietal portion, and a short, pronounced ridge on the surface of the squamosal portion of the frill.[1]

Classification

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Crittendenceratops was assigned to the Nasutoceratopsini (which also includes Avaceratops, Nasutoceratops, and Yehuecauhceratops), a tribe of the ceratopsid subfamily Centrosaurinae, by Dalman et al. (2018). The cladogram below follows their phylogenetic analysis:[1]

See also

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References

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  1. ^ a b Dalman, Sebastian G.; Hodnett, John-Paul M.; Lichtig, Asher J.; Lucas, Spencer G. (2018). "A new ceratopsid dinosaur (Centrosaurinae: Nasutoceratopsini) from the Fort Crittenden Formation, Upper Cretaceous (Campanian) of Arizona". New Mexico Museum of Natural History and Science Bulletin. 79: 141–164.