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A Jurassic eutherian mammal and divergence of marsupials and placentals
Placentals are the most abundant mammals that have diversified into every niche for vertebrates and dominated the world’s terrestrial biotas in the Cenozoic. A critical event in mammalian history isExpand
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Dual origin of tribosphenic mammals
Marsupials, placentals and their close therian relatives possess complex (tribosphenic) molars that are capable of versatile occlusal functions. This functional complex is widely thought to be a keyExpand
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A new symmetrodont mammal from China and its implications for mammalian evolution
A new symmetrodont mammal has been discovered in the Mesozoic era (Late Jurassic or Early Cretaceous period) of Liaoning Province, China. Archaic therian mammals, including symmetrodonts, are extinctExpand
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Homology and Transformation of Cetacean Ectotympanic Structures
The ectotympanic bullae of whales and land mammals have many differences that resulted from the morphological divergence of whales from their ungulate ancestors. These differences in bullar structureExpand
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A Cretaceous eutriconodont and integument evolution in early mammals
The Mesozoic era (252–66 million years ago), known as the domain of dinosaurs, witnessed a remarkable ecomorphological diversity of early mammals. The key mammalian characteristics originated duringExpand
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A LARGE ORNITHOMIMID PES FROM THE LOWER CRETACEOUS OF THE MAZONGSHAN AREA, NORTHERN GANSU PROVINCE, PEOPLE’S REPUBLIC OF CHINA
A large ornithomimid pes from the Lower Cretaceous of the Mazongshan area, northern Gansu Province, People's Republic of China Michael D. Shapiro a g , Hailu You b c , Neil H. Shubin d , Zhexi Luo eExpand
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CT scanning and computerized reconstructions of the inner ear of multituberculate mammals
ABSTRACT The inner-ear structure of four multituberculate petrosals from the Late Cretaceous and Early Paleocene of North America was examined with computerized tomography (CT). Transverse CT scanExpand
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Palaeobiology: A refugium for relicts
The Yixian Formation in China's Liaoning Province has yielded many spectacular fossils — notably, several remarkably complete feathered dinosaurs. Yet its age has been controversial. AccurateExpand
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Evolution: In search of the whales' sisters
  • Zhexi Luo
  • Biology, Medicine
  • Nature
  • 16 March 2000
The cetaceans — dolphins, porpoises and whales — are aquatic mammals that returned to the sea. A long-standing puzzle is which other mammals are their closest relatives, for molecular andExpand
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