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An Early Cretaceous spinosaurid theropod from southern China
Teeth from the Early Cretaceous Napai Formation of Fusui County, Guangxi Zhuang Autonomous Region (South China), initially described as the sauropterygian Sinopliosaurus fusuiensis, are redescribed as belonging to a spinosaurid theropod closely allied to Siamosaurus suteethorni, from the Early Cretaceous of Thailand. This identification extends to China the geographical range of Asian spinosaurs, previously reported from Thailand and Japan.
Spinosaurid tooth from the Napai Formation (Early Cretaceous) of Fusui county, Guangxi Zhuang Autonomous Region, southern China, IVPP V 4793, in lingual (a), distal (b) and labial (c) views, and close up of apex in lingual view (d), showing ribs and enamel wrinkling. Scale bars: 10 mm.