Results 121 to 130 of about 580 (139)
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Montanoceratops cerorhynchus(Dinosauria: Ceratopsia) and relationships among basal neoceratopsians
Journal of Vertebrate Paleontology, 1998ABSTRACT Montanoceratops cerorhynchus has been described as the sister group of Ceratopsidae, even though analyses and diagnosis of this taxon have been tentative and incomplete. A second specimen of M. cerorhynchus includes new diagnostic elements, most notably a partial skull including the caudal half of the braincase, pectoral girdle and manus ...
Brenda J. Chinnery, David B. Weishampel
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Key to Protoceratopoid vertebrae (Ceratopsia, Dinosauria) from Mongolia
Paleontological Journal, 2007A detailed nomenclature and a measurement system for vertebrae of Mongolian Protoceratopoidea are proposed. A key to vertebrae that allow the determination of the region of the vertebral column and the serial number of each vertebra within each region is developed.
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The Forelimb and Pectoral Girdle of Pachyrhinosaurus lakustai (Ceratopsia, Centrosaurinae)
2020Ceratopsidae is a group of non-avian dinosaurs known for their distinctive cranial ornamentation and horns. This ornamentation has become the focal point of ceratopsid research and therefore has led to a state of affairs in ceratopsid palaeontology in which taxa are diagnosed on the basis of cranial morphology and the postcranial skeleton is generally ...
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Morphology of the Craniovertebral Joint in Psittacosaurus sibiricus (Ornithischia: Ceratopsia)
Paleontological Journal, 2018The joint of the occipital skull region and two first cervical vertebrae of Psittacosaurus sibiricus from the Shestakovo locality (Barremian–Aptian), Kemerovo Region, Russia is described. The morphological differences in the atlas–axis complex between the infraorders Psittacosauria and Neoceratopsia connected with their functional features are revealed.
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Journal of Vertebrate Paleontology, 1988
Abstract Newly discovered, well-preserved skulls and mandibles from the lowest part of the Early Cretaceous Yixian Formation, western Liaoning Province, China, document the earliest known record of psittacosaurs and provide the basis for recognition of a new species, Psittacosaurus lujiatunensis .
Paul C. Sereno, Chao Shichin
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Abstract Newly discovered, well-preserved skulls and mandibles from the lowest part of the Early Cretaceous Yixian Formation, western Liaoning Province, China, document the earliest known record of psittacosaurs and provide the basis for recognition of a new species, Psittacosaurus lujiatunensis .
Paul C. Sereno, Chao Shichin
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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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Papers in Palaeontology
AbstractThe herbivorous dinosaur clade Ceratopsia flourished in the northern hemisphere during the Late Jurassic to Late Cretaceous. Previous palaeobiogeographic studies have suggested that their initial diversification occurred in Asia, with early‐branching neoceratopsians extending their geographical range to North America sometime during the ...
Kentaro Chiba +2 more
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AbstractThe herbivorous dinosaur clade Ceratopsia flourished in the northern hemisphere during the Late Jurassic to Late Cretaceous. Previous palaeobiogeographic studies have suggested that their initial diversification occurred in Asia, with early‐branching neoceratopsians extending their geographical range to North America sometime during the ...
Kentaro Chiba +2 more
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The Anatomical Record, 2016
ABSTRACTWe describe a Psittacosaurus specimen from the Lujiatun beds of the Yixian Formation in Liaoning, China with an abnormality on its left fibula. Although a large number of Psittacosaurus specimens are known, only a single example of a pathologic Psittacosaurus has been previously noted.
B P, Hedrick +9 more
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ABSTRACTWe describe a Psittacosaurus specimen from the Lujiatun beds of the Yixian Formation in Liaoning, China with an abnormality on its left fibula. Although a large number of Psittacosaurus specimens are known, only a single example of a pathologic Psittacosaurus has been previously noted.
B P, Hedrick +9 more
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Acta Geologica Sinica - English Edition, 2010
Abstract:Epaxial tendons play an important role in the study of the musculoskeletal system and locomotory style of dinosaurs. Although the ossified epaxial tendon lattice is fairly well known in Iguanodontoidea, only recently has knowledge of this complex been extended to ceratopsians.
Chang‐Fu ZHOU +2 more
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Abstract:Epaxial tendons play an important role in the study of the musculoskeletal system and locomotory style of dinosaurs. Although the ossified epaxial tendon lattice is fairly well known in Iguanodontoidea, only recently has knowledge of this complex been extended to ceratopsians.
Chang‐Fu ZHOU +2 more
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A New Genus and Species of Ceratopsia from the Belly River Formation of Alberta
1913(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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