Coahuilaceratops

Coahuilaceratops (meaning "Coahuila horn face") is a genus of herbivorous ceratopsiandinosaur. It is a chasmosaurine ceratopsianwhich lived during the Late Cretaceous period(late Campanian stage) in what is now southern Coahuila in northern Mexico. It is known from the holotype CPC 276, a partial skeleton of an adult individual which includes several skull elements. Another specimen, CPS 277, may represent a juvenile Coahuilaceratops. All specimens of Coahuilaceratops were collected from a single location in the middle strata of the Cerro del Pueblo Formation, which dates to between 72.5 and 71.4 million years ago.^[1]

Coahuilaceratops Temporal range: Late Cretaceous ~72.5–71.4 Ma  PreꞒ Ꞓ O S D C P T J K Pg N ↓
Skull of Coahuilaceratops
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Order:	†Ornithischia
Family:	†Ceratopsidae
Subfamily:	†Chasmosaurinae
Genus:	†Coahuilaceratops Loewen et al., 2010
Species:	†C. magnacuerna
Binomial name
†Coahuilaceratops magnacuerna Loewen et al., 2010

Restoration.

It was formally described in 2010, though it appeared as an informal designation (nomen nudum) as early as 2008.^[2] Coahuilaceratopswas named by Mark A. Loewen, Scott D. Sampson, Eric K. Lund, Andrew A. Farke, Martha C. Aguillón-Martínez, C.A. de Leon, R.A. Rodríguez-de la Rosa, Michael A. Getty and David A. Eberth in 2010 and the type species is Coahuilaceratops magnacuerna.^[1] Although based on incomplete remains, Coahuilaceratops is thought to possess among the largest horns of any dinosaur currently known, rivaling in absolute size those of larger chasmosaurines like Triceratops and Torosaurus. Its horns are estimated to have been up to 1.2 m (4 feet) long.^[3][1] In 2012 Thomas Hotlz gave a length of 8 meters (26 ft).^[4]

SystematicsEdit

Coahuilaceratops is a member of the Chasmosaurinae. Below is a cladogram that represents the findings of Caleb Brown and Donald Henderson (2015). Coahuilaceratopsand Bravoceratops were resolved as sister taxa yet in a recent analysis by Mallon et al. Bravoceratops was removed from the Chasmosaurinae entirely because it decreased resolution in the authors' analysis.^[5][6]

Chasmosaurinae

Vagaceratops irvinensis     Kosmoceratops richardsoni                   Chasmosaurus belli     Chasmosaurus russeli       Mojoceratops perifania       Agujaceratops mariscalensis         Utahceratops gettyi     Pentaceratops sternbergii           Bravoceratops polyphemus     Coahuilaceratops magnacuerna             Anchiceratops ornatus     Arrhinoceratops brachyops       Triceratopsini     Regaliceratops peterhewsi     Eotriceratops xerinsularis     Ojoceratops fowleri       Titanoceratops ouranos       Nedoceratops hatcheri         Torosaurus latus     Torosaurus utahensis         Triceratops prorsus     Triceratops horridus

This article uses material from the Wikipedia article  Metasyntactic variable, which is released under the  Creative Commons Attribution-ShareAlike 3.0 Unported License.