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Chasmosaurinae

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Journal Article
Published: 05 August 2015
Canadian Journal of Earth Sciences (2015) 52 (8): 608-619.
... is the only other chasmosaurine genus to possess character 2, yet in the latter the dorsal squamosal border lateral to the supratemporal fenestra ascends posteriorly instead ( Forster et al. 1993 , fig. 3). The polarity of character 7 within Chasmosaurinae is presently unknown. Chasmosaurus sp. ( Figs...
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Time-calibrated phylogeny of <b>Chasmosaurinae</b> from  Sampson et al. (2010) . F...
Published: 18 April 2013
Fig. 4. Time-calibrated phylogeny of Chasmosaurinae from Sampson et al. (2010) . Figure reproduced by permission of Scott Sampson. A similar figure for Centrosaurinae appears in Sampson and Loewen (2010) .
Journal Article
Published: 05 May 2014
Canadian Journal of Earth Sciences (2014) 51 (6): 618-634.
.... Phylogenetic analysis cannot resolve the relationships of Arrhinoceratops beyond the level of Chasmosaurinae, owing to both missing data and conflicting characters. However, we do find some support for a deep split within Chasmosaurinae, contrary to conventional topologies. We also report on other fragmentary...
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Journal Article
Published: 15 December 2014
Canadian Journal of Earth Sciences (2014) 51 (11): 987-991.
... dinosaur taxa have been identified at the site: Albertosaurus sarcophagus , Chasmosaurinae indet., Dromaeosauridae indet., Edmontosaurus regalis , Ornithomimidae indet., and Troodontidae indet. This bonebed has been used as a case study for creating a digital, searchable bonebed map using a geographic...
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Journal Article
Published: 06 December 2014
Canadian Journal of Earth Sciences (2015) 52 (2): 85-95.
... referral of this taxon to Chasmosaurinae, but missing anatomy prevents an understanding of how J . tigris is related to other chasmosaurines. Judiceratops tigris is retained here as a distinct taxon, and, hence, the oldest known chasmosaurine, but it has more in common with other chasmosaurines than...
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Journal Article
Published: 01 July 2010
Journal of Paleontology (2010) 84 (4): 681-694.
... of these differences. Phylogenetic analysis shows that Mojoceratops forms a clade with Agujaceratops mariscalensis ; Chasmosaurus is the most basal member of Chasmosaurinae. 25 03 2010 The Paleontological Society 2010 Dinosauria Ceratopsia Chasmosaurinae Dinosaur Park Formation...
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Journal Article
Published: 01 May 2005
Journal of Paleontology (2005) 79 (3): 564-582.
... as the single Torosaurus record from Saskatchewan ( Tokaryk, 1986 ), are based on specimens that can at best be identified as Chasmosaurinae genus indeterminate, because they lack derived features of the taxon. Putative Torosaurus specimens from the Big Bend region of Texas ( Lawson, 1976 ; Lehman, 1996...
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Journal Article
Published: 01 October 1997
Canadian Journal of Earth Sciences (1997) 34 (10): 1401-1404.
...Tim T. Tokaryk Abstract The first occurrence from the Frenchman Formation (late Maastrichtian) of juvenile ceratopsians (Chasmosaurinae) is reported here based on two postorbital horn-cores. The sutures confirm that the frontal attaches along the medial side of the postorbital much like...
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Figure  8 —Line drawings (to scale) of selected ceratopsian (right) squamos...
Published: 01 May 2005
Figure 8 —Line drawings (to scale) of selected ceratopsian (right) squamosals (see text for discussion); regions between tick marks indicate broken edges. 1, Holotype of Torosaurus utahensis (USNM 15583); 2, holotype of Arrhinoceratops brachyops (ROM 796); 3, Chasmosaurinae indeterminate
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Comparison of postorbital horncore basal circumference between  Medusacerat...
Published: 28 November 2017
Figure 7 Comparison of postorbital horncore basal circumference between Medusaceratops , Centrosaurinae, non-Triceratopsini Chasmosaurinae, and Triceratopsini. In the box plots, mean values are represented by lines in the boxes, lower and upper bounds of the boxes represent the first and third
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Regional map of Hill County, northern Montana, showing localities of specim...
Published: 06 December 2014
potential collection localities for these two specimens. YPM VPPU 023411 (Chasmosaurinae indet.) was collected in Kennedy Coulee, near the Schwan House, and is therefore considered here to have also been collected in R. 9E (T. 37N, R. 9E, S. 16, Q. SW NW), and not R. 5W (T. 37N, R. 5W, S. 16, Q. SW NW
Journal Article
Published: 01 January 2004
Rocky Mountain Geology (2004) 39 (1): 1-5.
... Anchiceratops Ceratopsia Ceratopsidae Chasmosaurinae Late Cretaceous Mesaverde Group Present address: Department of Anatomical Sciences, Stony Brook University, Stony Brook, NY 11794, U.S.A. email: afarke@ic.sunysb.edu The 1937 American Museum of Natural History–Sinclair Oil Company joint...
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Journal Article
Published: 15 December 2014
Canadian Journal of Earth Sciences (2014) 51 (11): 1034-1038.
... ornatus ROM 802 425 620 Anchiceratops ornatus UW 2419 484 672 Chasmosaurinae indet. SMNH P2613.1 * 117 64 Chasmosaurinae indet. SMNH P2299.1 * 170 88 Chasmosaurinae indet. AMNH 5006 * 171 117 Pentaceratops sternbergii NMMNH P.21098 * 294 378...
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Journal Article
Published: 28 November 2017
Journal of Paleontology (2018) 92 (2): 272-288.
...Figure 7 Comparison of postorbital horncore basal circumference between Medusaceratops , Centrosaurinae, non-Triceratopsini Chasmosaurinae, and Triceratopsini. In the box plots, mean values are represented by lines in the boxes, lower and upper bounds of the boxes represent the first and third...
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Journal Article
Published: 01 March 2007
Journal of Paleontology (2007) 81 (2): 376-396.
... 2005 The Paleontological Society 2007 The ceratopsidae includes 13 named genera disposed in two subfamilies, the Centrosaurinae and the Chasmosaurinae ( Ryan and Russell, 2001 ). All valid taxa are from the Late Cretaceous sediments of the Western Interior Seaway of North America. All...
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Journal Article
Published: 01 February 2005
Journal of Paleontology (2005) 79 (2): 251-258.
... skull (SDMNH 43470) referable to the ceratopsid subfamily Chasmosaurinae ( Diem, 1999 ). Chasmosaurines, or long-frilled ceratopsians, existed throughout western North America during the Campanian and Maastrichtian (Judithian, Edmontonian, and Lancian). Recent discoveries have renewed debate over...
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Journal Article
Published: 01 July 2006
Journal of Paleontology (2006) 80 (4): 780-785.
..., simple chambers in most members of the two ceratopsid clades Chasmosaurinae and Centrosaurinae ( Lehman, 1990 ). However, the frontal sinuses reach large proportions in some species, with a portion of the sinuses extending into the base of the postorbital horncores ( Forster, 1996 ; Sampson et al., 1997...
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Journal Article
Published: 08 November 2012
Canadian Journal of Earth Sciences (2012) 49 (10): 1251-1262.
.... Order Ornithischia Seeley, 1888 Suborder Ceratopsia Marsh, 1890 Neoceratopsia Sereno, 1986 Family Ceratopsidae Marsh, 1888 Subfamily Chasmosaurinae Lambe, 1915 Xenoceratops gen. nov. Parietals CMN 54950 ( Fig. 4 ) and CMN 54951 ( Fig. 5...
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Journal Article
Published: 19 October 2001
Canadian Journal of Earth Sciences (2001) 38 (10): 1423-1438.
... and Chasmosaurinae. The centrosaurines have figured prominently throughout the history of North American dinosaur work, from the description of the first horned dinosaur Monoclonius ( Cope 1876 ; = Centrosaurus ) to the most recently described genera Einiosaurus and Achelousaurus ( Sampson 1995 ). In marked...
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Journal Article
Published: 18 April 2013
Canadian Journal of Earth Sciences (2013) 50 (3): 294-305.
...Fig. 4. Time-calibrated phylogeny of Chasmosaurinae from Sampson et al. (2010) . Figure reproduced by permission of Scott Sampson. A similar figure for Centrosaurinae appears in Sampson and Loewen (2010) . ...
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