Ji Shu'an
Geological Museum of China
Publications 7
#1Ji Shu'an (Geological Museum of China)H-Index: 6
#2Ji Qiang (Geological Museum of China)H-Index: 12
The pterosaur from the Yixian Formation in Beipiao, Liaoning Province, is characterized by the medium–sized individual, short tail, presence of the gastralia, strong forelimbs, radius and ulna longer than wing–metacarpal, extremely narrow and elongate metatarsals, degenerated and small phalanx V of hindlimb and so on. It must be a new genus and species, Eosipterus yangi gen. et sp. nov., in the early groups of the Suborder Pterodactyloidea. This is the first record of pterosaurs found in Liaonin...
#1Luis M. ChiappeH-Index: 45
#2Ji Shu'anH-Index: 6
Last.Ji QiangH-Index: 12
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Abstract Mesozoic remains of embryonic and early juvenile birds are rare. To date, a handful of in ovo embryos and early juveniles of enantiornithines from the Early Cretaceous of China and Spain and the Late Cretaceous of Mongolia and Argentina have comprised the entire published record of perinatal ontogenetic stages of Mesozoic birds. We report on the skeletal morphology of three nearly complete early juvenile avians from the renowned Early Cretaceous Yixian Formation of Liaoning Province in ...
#1Keqin Gao (AMNH: American Museum of Natural History)H-Index: 5
#2Susan E. Evans (UCL: University College London)H-Index: 38
Last.Ji Shu'an (Geological Museum of China)H-Index: 6
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The lacustrine deposits of the Yixian Formation, western Liaoning, China, are renowned for producing remarkable vertebrate fossils, including primitive birds (e.g., Hou et al., 1995) and feathered dinosaurs (e.g., Ji et al., 1998). However, the first tetrapod described from these beds was a small reptile, Monjurosuchus Endo, 1940, whose relationships have remained problematic because key features of its morphology have been poorly understood. The discovery of five finely-preserved Monjurosuchus ...
#1Ji Qiang (Geological Museum of China)H-Index: 12
#2Luis M. Chiappe (AMNH: American Museum of Natural History)H-Index: 45
Last.Ji Shu'an (Geological Museum of China)H-Index: 6
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#1Ji Qiang (China University of Geosciences)H-Index: 1
#2LUOZhexi (Carnegie Museum of Natural History)H-Index: 2
Last.Ji Shu'an (Geological Museum of China)H-Index: 6
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Here we describe a new triconodont mammal from the Late Jurassic/Early Cretaceous period of Liaoning, China. This new mammal is represented by the best-preserved skeleton known so far for triconodonts which form one of the earliest Mesozoic mammalian groups with high diversity. The postcranial skeleton of this new triconodont shows a mosaic of characters, including a primitive pelvic girdle and hindlimb but a very derived pectoral girdle that is closely comparable to those of derived therians. G...
#1Ji Qiang (Geological Museum of China)H-Index: 12
#2Philip J. Currie (Royal Tyrrell Museum)H-Index: 50
Last.Ji Shu'an (Geological Museum of China)H-Index: 6
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Current controversy over the origin and early evolution of birds centres on whether or not they are derived from coelurosaurian theropod dinosaurs. Here we describe two theropods from the Upper Jurassic/Lower Cretaceous Chaomidianzi Formation of Liaoning province, China. Although both theropods have feathers, it is likely that neither was able to fly. Phylogenetic analysis indicates that they are both more primitive than the earliest known avialan (bird), Archaeopteryx. These new fossils represe...
#1Jiang Pan (Geological Museum of China)H-Index: 1
#2Liwu Lu (Geological Museum of China)H-Index: 1
Last.Ji Shu'an (Geological Museum of China)H-Index: 6
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Abstract New discoveries of Silurian and Devonian vertebrates in China and their palaeogeographical significance are reviewed. The Middle Paleozoic fish assemblages of the Tarim basin are similar to those of South China. Fossil vertebrate evidence shows the appearance of the Chinese platform in Middle Paleozoic and its close relation with East Gondwana at least in Early Devonian.