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A remarkable short-snouted horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia.
Proc Biol Sci. 2013 Sep 07; 280(1766):20131186.PB

Abstract

The fossil record of centrosaurine ceratopsids is largely restricted to the northern region of western North America (Alberta, Montana and Alaska). Exceptions consist of single taxa from Utah (Diabloceratops) and China (Sinoceratops), plus otherwise fragmentary remains from the southern Western Interior of North America. Here, we describe a remarkable new taxon, Nasutoceratops titusi n. gen. et sp., from the late Campanian Kaiparowits Formation of Utah, represented by multiple specimens, including a nearly complete skull and partial postcranial skeleton. Autapomorphies include an enlarged narial region, pneumatic nasal ornamentation, abbreviated snout and elongate, rostrolaterally directed supraorbital horncores. The subrectangular parietosquamosal frill is relatively unadorned and broadest in the mid-region. A phylogenetic analysis indicates that Nasutoceratops is the sister taxon to Avaceratops, and that a previously unknown subclade of centrosaurines branched off early in the group's history and persisted for several million years during the late Campanian. As the first well-represented southern centrosaurine comparable in age to the bulk of northern forms, Nasutoceratops provides strong support for the provincialism hypothesis, which posits that Laramidia-the western landmass formed by inundation of the central region of North America by the Western Interior Seaway-hosted at least two coeval dinosaur communities for over a million years of late Campanian time.

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Authors+Show Affiliations

Sampson SD
Denver Museum of Nature and Science, 2001 Colorado Boulevard, Denver, CO 80205, USA. scott.sampson@dmns.org
Lund EK
No affiliation info available
Loewen MA
No affiliation info available
Farke AA
No affiliation info available
Clayton KE
No affiliation info available

MeSH

AnimalsDinosaursFossilsPhylogenySkullUtah

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23864598

Citation

Sampson, Scott D., et al. "A Remarkable Short-snouted Horned Dinosaur From the Late Cretaceous (late Campanian) of Southern Laramidia." Proceedings. Biological Sciences, vol. 280, no. 1766, 2013, p. 20131186.
Sampson SD, Lund EK, Loewen MA, et al. A remarkable short-snouted horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia. Proc Biol Sci. 2013;280(1766):20131186.
Sampson, S. D., Lund, E. K., Loewen, M. A., Farke, A. A., & Clayton, K. E. (2013). A remarkable short-snouted horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia. Proceedings. Biological Sciences, 280(1766), 20131186. https://doi.org/10.1098/rspb.2013.1186
Sampson SD, et al. A Remarkable Short-snouted Horned Dinosaur From the Late Cretaceous (late Campanian) of Southern Laramidia. Proc Biol Sci. 2013 Sep 7;280(1766):20131186. PubMed PMID: 23864598.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A remarkable short-snouted horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia. AU - Sampson,Scott D, AU - Lund,Eric K, AU - Loewen,Mark A, AU - Farke,Andrew A, AU - Clayton,Katherine E, Y1 - 2013/07/17/ PY - 2013/7/19/entrez PY - 2013/7/19/pubmed PY - 2014/2/25/medline KW - Centrosaurinae KW - Ceratopsidae KW - Dinosauria KW - Kaiparowits Formation KW - Laramidia KW - Nasutoceratops titusi SP - 20131186 EP - 20131186 JF - Proceedings. Biological sciences JO - Proc Biol Sci VL - 280 IS - 1766 N2 - The fossil record of centrosaurine ceratopsids is largely restricted to the northern region of western North America (Alberta, Montana and Alaska). Exceptions consist of single taxa from Utah (Diabloceratops) and China (Sinoceratops), plus otherwise fragmentary remains from the southern Western Interior of North America. Here, we describe a remarkable new taxon, Nasutoceratops titusi n. gen. et sp., from the late Campanian Kaiparowits Formation of Utah, represented by multiple specimens, including a nearly complete skull and partial postcranial skeleton. Autapomorphies include an enlarged narial region, pneumatic nasal ornamentation, abbreviated snout and elongate, rostrolaterally directed supraorbital horncores. The subrectangular parietosquamosal frill is relatively unadorned and broadest in the mid-region. A phylogenetic analysis indicates that Nasutoceratops is the sister taxon to Avaceratops, and that a previously unknown subclade of centrosaurines branched off early in the group's history and persisted for several million years during the late Campanian. As the first well-represented southern centrosaurine comparable in age to the bulk of northern forms, Nasutoceratops provides strong support for the provincialism hypothesis, which posits that Laramidia-the western landmass formed by inundation of the central region of North America by the Western Interior Seaway-hosted at least two coeval dinosaur communities for over a million years of late Campanian time. SN - 1471-2954 UR - https://www.unboundmedicine.com/medline/citation/23864598/A_remarkable_short_snouted_horned_dinosaur_from_the_Late_Cretaceous__late_Campanian__of_southern_Laramidia_ L2 - https://royalsocietypublishing.org/doi/abs/10.1098/rspb.2013.1186?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -