New Evidence of Sauropod Dinosaurs from the Early Jurassic Period of Thailand

作     者：LAOJUMPON Chalida SUTEETHORN Varavudh CHANTHASIT Phornphen LAUPRASERT Komsom SUTEETHORN Suravech 

作者机构：Department of Biology Faculty of Science Mahasarakham University Khantarawichai Mahasarakham 44150 Thailand Palaeontological Research and Education Centre Mahasarakham University Khamrieng Maha Sarakham 44150 Thailand Sirindhorn Museum Department of mineral resources SahatSakhan Kalasin 46310 Thailand 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2017年第91卷第4期

页      面：1169-1178页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 

基　　金：supported by science achievement scholarship of Thailand(SAST) the National Research Council of Thailand(NRCT) the Thailand Research Fund(TRF) the Palaeontological Research and Education Centre(PRC) 

主　　题：Isanosaurus sauropod dinosaurs Early Jurassic Nam Phong Formation Thailand 

摘      要：The oldest dinosaur assemblages of Thailand deposit in continental sedimentary rocks of the Nam Phong Formation. Not only Isanosaurus attavipatchi was discovered but at least two more species of basal sauropods were found. A partial skeleton from Phu Hin Tan locality refers to sauropod taxon A. It is different from Isanosaurus and shares some characteristics with basal sauropods in the Early Jurassic. The sauropod taxon B was found in Non Sra Ard locality. Base on postcranial skeleton, sauropod taxon B shares some characteristics of the family Vnlcanodontidae. Moreover, several fragments of the sauropods specimen are also found in Pha Khok Wang Yang and Phu Noi localities. All of the evidences above indicate that there are a highly diversity of sauropods in the Nam Phong Formation. At least three sauropod species （including Isanosaurus） were found in the Nam Phong formation. The issue about the age of the Nam Phong has been debated for a long time between the Triassic and Jurassic age. All of sauropodomorphs, in this study, are more likely the Early Jurassic period dinosaurs than the Triassic period dinosaurs. And they have deposited in the upper part of Nam Phong Formation.