A New Eusauropod Dinosaur from the Lower Cretaceous of Guangxi Province, Southern China |
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Authors: | MO Jinyou XU Xing Eric BUFFETAUT |
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Institution: | 1. Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China;2. Natural History Museum of Guangxi, Nanning 530012, China;3. Institute of Vertebrate Paleontology and Paleoanthropology, Beijing 100044, China;4. CNRS, UMR 8538, Laboratoire de Geologie de l'Ecole Normale Superieure, 24 rue Lhomond, 75231 Paris Cedex 05, France |
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Abstract: | A new sauropod dinosaur, Liubangosaurus hei gen. et sp. nov., is erected based on a specimen represented by five articulated middle‐caudal dorsal vertebrae, which was discovered in the Lower Cretaceous Napai Formation of Guangxi Province, southern China. This new taxon is diagnosed by a unique combination of derived features: prezygapophysis closely contacts with parapophysis, with the prdl and prpl absent; presence of cavity on the dorsal surface of the diapophysis; neural spine very low, with its distal end level with that of diapophysis; distal end of the neural spine strongly expanded laterally to form a platform; marked fossa formed between the infradiapophyseal lamina and the parapophysis; broad, flat area of featureless bone on lateral surface of neural arch; vertically directed infradiapophyseal lamina expands or bifurcates ventrally to form a inverted “Y”; highly positioned parapophyses large and tear‐drop in shape. The discovery of this new taxon increases the diversity of sauropods in China during the Early Cretaceous. |
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Keywords: | Eusauropoda Liubangosaurus hei Napai Formation Early Cretaceous Guangxi China |
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