Project 964: S. D. Sampson, E. K. Lund, M. A. Loewen, A. A. Farke, K. E. Clayton. 2013. A remarkable short-snouted horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia. Proceedings of the Royal Society B: Biological Sciences. 280 (1766).
Specimen: † Nasutoceratops titusi (UMNH/VP:16800)

Abstract

The fossil record of centrosaurine ceratopsids is largely restricted to the northern region of western North America (Alberta, Montana, Alaska). Exceptions consist of single taxa from Utah (Diabloceratops) and China (Sinoceratops), plus otherwise fragmentary remains from southern Laramidia. 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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Project DOI: 10.7934/P964, http://dx.doi.org/10.7934/P964
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 3 Documents
  • 24 Taxa
  • 1 Specimen
  • 98 Characters
Total size of project's media files: 1.7M

Download Project SDD File
Total scored cells: 1684
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 98
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 396
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:98/0
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MorphoBank Project 964

    Authors' Institutions

    • Ohio University

    • University of Utah

    • Denver Museum of Nature and Science

    • Natural History Museum of Utah

    • Raymond Alf Museum of Paleontology (The Webb Schools)



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    Mark Loewen
    Project Administrator
    241119800001684
    (1480, 0, 204)
    0000
    Maureen Admin
    Full membership
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    MorphoBank Curator
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    Taxonomic Overview for Matrix 'M2151' (24 Taxa)

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    [1] † Leptoceratops gracilis
    Last Modified in 12/05/13
    16060037003
    [2] † Protoceratops andrewsi
    Last Modified in 12/05/13
    26666030003
    [3] † Magnirostris dodsoni
    Last Modified in 12/05/13
    333535030003
    [4] † Bagaceratops rozhdestvenskyi
    Last Modified in 12/05/13
    263838034003
    [5] † Turanoceratops tardabilis
    Last Modified in 12/05/13
    80141404003
    [6] † Zuniceratops christopheri
    Last Modified in 12/05/13
    255353020003
    [7] † Diabloceratops eatoni
    Last Modified in 12/05/13
    31666601003
    [8] † Albertaceratops nesmoi
    Last Modified in 12/05/13
    37595902003
    [9] † Rubeosaurus ovatus
    Last Modified in 12/05/13
    62353501003
    [10] † Styracosaurus albertensis
    Last Modified in 12/05/13
    2949402003
    [11] † Spinops sternbergorum
    Last Modified in 12/05/13
    62343402003
    [12] † Centrosaurus apertus
    Last Modified in 12/05/13
    0969602003
    [13] † Coronosaurus brinkmani
    Last Modified in 12/05/13
    13838302003
    [14] † Xenoceratops foremostensis
    Last Modified in 12/05/13
    73242401003
    [15] † Sinoceratops zhuchengensis
    Last Modified in 12/05/13
    47494803003
    [16] † Einiosaurus procurvicornis
    Last Modified in 12/05/13
    17797803003
    [17] † Achelousaurus horneri
    Last Modified in 12/05/13
    26696903003
    [18] † Pachyrhinosaurus canadensis
    Last Modified in 12/05/13
    36595903003
    [19] † Pachyrhinosaurus lakustai
    Last Modified in 12/05/13
    8878703003
    [20] † Pachyrhinosaurus perotorum
    Last Modified in 12/05/13
    43535203003
    [21] † Chasmosaurus belli
    Last Modified in 12/05/13
    1939205003
    [22] † Pentaceratops sternbergii
    Last Modified in 12/05/13
    1929205003
    [23] † Avaceratops lammersi
    Last Modified in 12/05/13
    19747405003
    [24] † Nasutoceratops titusi
    Last Modified in 12/05/13
    27686803003


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    Total project views39726
    Project overview4492
    Matrix views2896Matrix landing page (2550 views); Nasutoceratops phylogeny (346 views);
    Taxon list18817
    Media views6705Media search (5794 views); M307812 (911 views);
    Specimen list3255
    Bibliography1340
    Documents list2221




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project402
    Project downloads376
    Matrix downloads17Nasutoceratops phylogeny (17 downloads);
    Document downloads8Nasutoceratops characters (4 downloads); Nasutoceratops matrix Excel (2 downloads); Nasutoceratops matrix TNT (2 downloads);
    Media downloads1M307812 (1 download);