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Mark A. Norell
American Museum of Natural History
CretaceousPaleontologyTheropodaBiologyZoology
236Publications
60H-index
9,800Citations
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Publications 246
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#1Christopher R. Torres (University of Texas at Austin)H-Index: 4
#2Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
Last. Julia A. Clarke (University of Texas at Austin)H-Index: 28
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#1Hongyu Yi (CAS: Chinese Academy of Sciences)H-Index: 3
#2Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
Abstract Mosasaurs were among the last marine reptiles that lived before the Cretacesous–Paleogene extinction. Little is known about the sensory evolution of mosasaurs in relation to their aquatic lifestyle. In this study, the braincase of Platecarpus was CT-scanned and virtual models were constructed showing the bony labyrinth — or the inner ear — a sensory apparatus for balance and hearing. The virtual inner ear consists of the semicircular canals, vestibule, and cochlea. Compared with extant ...
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#1Jun Wang (CAS: Chinese Academy of Sciences)H-Index: 7
#2Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
Last. Su-Chin Chang (HKU: University of Hong Kong)H-Index: 11
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Abstract Mamenchisauridae, a sauropod group named after the largest known proto-Asian sauropod Mamenchisaurus, is generally believed to range from the Early to the Late Jurassic in age. Fossil remains of Mamenchisaurus are primarily found in the Upper Shaximiao Formation and less frequently in the overlying Suining Formation in the Sichuan Basin. An accurate absolute age for Mamenchisaurus is critical for understanding the evolution and radiation of the mamenchisaurids. However, reliable age det...
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#1Emanuel Tschopp (AMNH: American Museum of Natural History)H-Index: 8
#2Susannah C. R. Maidment (Natural History Museum)H-Index: 17
Last. Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
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The Upper Jurassic Morrison Formation of the western United States preserves one of the best-known Mesozoic paleoecosystems worldwide. The formation crops out over an area from New Mexico and Oklahoma to Montana and Utah and encompasses a time span of approximately eight million years. Recent studies indicate a high diversity of gigantic, herbivorous sauropod dinosaurs, but the geographic and temporal distributions of species or even genera of these animals remain poorly understood. In particula...
1 CitationsSource
#1Sarah C. Hood (University of Texas at Austin)
#2Christopher R. Torres (University of Texas at Austin)H-Index: 4
Last. Julia A. Clarke (University of Texas at Austin)H-Index: 28
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Understanding of the Asian early Paleogene avifauna is limited relative to that of North American and European avifauna of the same period. While major patterns of mammalian faunal exchange among these three regions across the Paleocene/Eocene boundary have been described, much less is known about the dynamics of bird diversity over the same time interval. Here, we report bird fossils from the earliest Eocene Bumban Member of the Naranbulag Formation in central Mongolia that add to the known rec...
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#1Ryan N. Felice (UCL: University College London)H-Index: 3
#2Akinobu Watanabe (New York Institute of Technology College of Osteopathic Medicine)H-Index: 6
Last. Anjali Goswami (UCL: University College London)H-Index: 32
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Complex structures, like the vertebrate skull, are composed of numerous elements or traits that must develop and evolve in a coordinated manner to achieve multiple functions. The strength of association among phenotypic traits (i.e., integration), and their organization into highly-correlated, semi-independent subunits termed modules, is a result of the pleiotropic and genetic correlations that generate traits. As such, patterns of integration and modularity are thought to be key factors constra...
1 CitationsSource
Jul 28, 2019 in SIGGRAPH (International Conference on Computer Graphics and Interactive Techniques)
Last. Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
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"T. rex: Skeleton Crew" is a multiplayer, wireless VR experience designed for AMNH's exhibition "T. rex: The Ultimate Predator." Together, three players assemble a T. rex skeleton and then witness it come to life as the environment transforms from a museum gallery to the Cretaceous world 66 million years ago.
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#1James G. Napoli (AMNH: American Museum of Natural History)
#2Tyler Hunt (FSU: Florida State University)
Last. Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
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Psittacosaurus is the most speciose nonavian dinosaur genus, represented by at least 10 (and possibly as many as 19) species uncovered over a wide geographic range. Here, we report a new species of large-bodied Psittacosaurus from the Ondai Sayr locality in central Mongolia, which has hitherto produced only one other Psittacosaurus specimen. This new species is characterized by: (1) an elongate snout, with a gently inclined rostronasal margin, (2) a cranium dorsally convex rather than flat, (3) ...
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#1Evan T. Saitta (FMNH: Field Museum of Natural History)H-Index: 5
#2Renxing Liang (Princeton University)H-Index: 1
Last. Tullis C. Onstott (Princeton University)H-Index: 51
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The chances of establishing a real-world Jurassic Park are slim. During the fossilization process, biological tissues degrade over millions of years, with some types of molecules breaking down faster than others. However, traces of biological material have been found inside some fossils. While some researchers believe these could be the remains of ancient proteins, blood vessels, and cells, traditionally thought to be among the least stable components of bone, others think that they have more re...
1 CitationsSource
#1Jasmina Wiemann (Yale University)H-Index: 3
#2Tzu-Ruei Yang (CAS: Chinese Academy of Sciences)H-Index: 3
Last. Mark A. Norell (AMNH: American Museum of Natural History)H-Index: 60
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