Results 111 to 120 of about 478 (130)
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HINDLIMB OF AN INDETERMINATE CERATOPSID DINOSAUR One of us (BT) created a reconstruction of UALVP 42, an indeterminate ceratopsid left partial hindlimb comprising almost all the crural and pedal elements, to explore and illustrate the articular configuration of the lower hindlimb in Ceratopsidae for a future descriptive paper (Theurer et al.
Sullivan, Corwin +4 more
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Sullivan, Corwin +4 more
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Journal of Vertebrate Paleontology, 2010
ABSTRACT Although they have been considered distinct genera for over a century, ontogenetic analyses reveal that Triceratops and “Torosaurus” actually represent growth stages of a single genus. Major changes in cranial morphology—including the opening of parietal fenestrae and the elongation of the squamosals—occur rapidly, very late in Triceratops ...
John B. Scannella, John R. Horner
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ABSTRACT Although they have been considered distinct genera for over a century, ontogenetic analyses reveal that Triceratops and “Torosaurus” actually represent growth stages of a single genus. Major changes in cranial morphology—including the opening of parietal fenestrae and the elongation of the squamosals—occur rapidly, very late in Triceratops ...
John B. Scannella, John R. Horner
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1982
Published as part of Carpenter, Kenneth, 1982, Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of a new species of theropod, pp.
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Published as part of Carpenter, Kenneth, 1982, Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of a new species of theropod, pp.
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1972
FAMILY CERATOPSIDAE Figure 9G, H Although worn ceratopsian teeth form a sizable portion of the ornithischian remains, they cannot be differentiated at the generic level. Unworn teeth indicate that at least two genera of ceratopsians may have been present.
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FAMILY CERATOPSIDAE Figure 9G, H Although worn ceratopsian teeth form a sizable portion of the ornithischian remains, they cannot be differentiated at the generic level. Unworn teeth indicate that at least two genera of ceratopsians may have been present.
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Journal of Paleontology, 2017
AbstractMedusaceratops lokiiRyan, Russell, and Hartman, 2010 is an enigmatic taxon of ceratopsid represented by partial parietals from the Mansfield bonebed in the Campanian Judith River Formation, Montana. Originally, all ceratopsid material collected from this bonebed was referred to the centrosaurine ceratopsidAlbertaceratops, but subsequently two ...
Chiba, Kentaro +4 more
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AbstractMedusaceratops lokiiRyan, Russell, and Hartman, 2010 is an enigmatic taxon of ceratopsid represented by partial parietals from the Mansfield bonebed in the Campanian Judith River Formation, Montana. Originally, all ceratopsid material collected from this bonebed was referred to the centrosaurine ceratopsidAlbertaceratops, but subsequently two ...
Chiba, Kentaro +4 more
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A reevaluation of the manus structure inTriceratops(Ceratopsia: Ceratopsidae)
Journal of Vertebrate Paleontology, 2009ABSTRACT A Triceratops, NSM PV 20379, excavated from the Upper Cretaceous Hell Creek Formation, Bowman County, North Dakota, USA, confirms the articulation of the right forearm. Detailed study of the forelimb anatomy presented here indicates the manus is in a semi-supinated orientation.
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Journal of Vertebrate Paleontology, 2011
ABSTRACT Anchiceratops is a chasmosaurine ceratopsid from the Upper Cretaceous Horseshoe Canyon Formation (HCF) of Alberta. It is distinguished primarily by its unique parietosquamosal frill ornamentation and possibly by the presence of a ventrally flexed olfactory bulb of the brain.
Jordan C. Mallon +4 more
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ABSTRACT Anchiceratops is a chasmosaurine ceratopsid from the Upper Cretaceous Horseshoe Canyon Formation (HCF) of Alberta. It is distinguished primarily by its unique parietosquamosal frill ornamentation and possibly by the presence of a ventrally flexed olfactory bulb of the brain.
Jordan C. Mallon +4 more
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The gigantic Ceratopsidae, or horned dinosaurs, of North America
Numerische Mathematik, 1891Two years ago at the Bath Meeting of the British Association, I had the honour to present a paper in which I compared the principal known Dinosaurs of Europe with those of America. In this communication I referred to some peculiar reptilian remains from the Gosau formation of Austria, and compared them with certain Laramie fossils from America, about ...
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Zootaxa, 2011
A previously undescribed chasmosaurine specimen excavated in 1919-1920 by William Cutler from the Dinosaur Park Formation of Alberta, Canada is referable to Chasmosaurus belli. The specimen comprises an almost complete skull in which, uniquely among Chasmosaurus, the cranial elements are disarticulated, allowing detailed examination of their morphology
Maidment, Susannah, Barrett, Paul
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A previously undescribed chasmosaurine specimen excavated in 1919-1920 by William Cutler from the Dinosaur Park Formation of Alberta, Canada is referable to Chasmosaurus belli. The specimen comprises an almost complete skull in which, uniquely among Chasmosaurus, the cranial elements are disarticulated, allowing detailed examination of their morphology
Maidment, Susannah, Barrett, Paul
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2023
Pentaceratops sternbergi is a late Campanian ceratopsian predominately known from the San Juan Basin in New Mexico. Previous specimen descriptions and cladistic analyses are based on partial skulls and composite specimens, which places Pentaceratops as an intermediate form between Chasmosaurus and Triceratops.
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Pentaceratops sternbergi is a late Campanian ceratopsian predominately known from the San Juan Basin in New Mexico. Previous specimen descriptions and cladistic analyses are based on partial skulls and composite specimens, which places Pentaceratops as an intermediate form between Chasmosaurus and Triceratops.
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