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Spinosaurid teeth from the Lower Cretaceous of Ko Kut,eastern Thailand
Affiliation:1. CNRS, UMR 8538, Laboratoire de géologie de l’École normale supérieure, PSL Research University, 23, rue Lhomond, 75231 Paris cedex 05, France;2. Palaeontological Research and Education Centre, Mahasarakham University, Khamrieng Sub-district, Kantharawichai District, Maha Sarakham Province 44150, Thailand;3. Department of Mineral Resource, Rama VI Road, Bangkok 10400, Thailand;1. School of Earth Sciences, University of Bristol, Wills Memorial Building, Bristol, BS8 1RJ, UK;2. Géosciences, UMR 6118, Université Rennes-1, 263, Avenue du Général-Leclerc, 35000, Rennes, France;3. 8 Crowmere Avenue, Bexhill-on-Sea, East Sussex, TN40 2BA, UK;4. 3 Bromley Road, Seaford, East Sussex, BN25 3ES, UK;5. 146 Church Hill Road, Sutton, Surrey, SM3 8NF, UK;6. Earth Sciences Department, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK;1. Max Planck Institute for the Science of Human History–Department of Archaeology, Kahlaische Straβe 10, 07745 Jena, Germany;2. INRAP-UMR 7209 “Archéozoologie, Archéobotanique : Sociétés, pratiques et environnements”, MNHN, 36, Avenue Paul-Vaillant-Couturier, 93120 La Courneuve, France;3. UMR CNRS 5554 “Institut des Sciences de l’Évolution de Montpellier”, Place Eugène-Bataillon, CP 065, 34095 Montpellier cedex 05, France;4. Nakhonratchasima Rajabhat University, 340 Suranarai Road, 30000 Nakhonratchasima, Thailand;5. Silpakorn University–Faculty of Archaeology, 31 Naphralan Rd, Phranakorn, Bangkok, Thailand;6. UMR 7207 CR2P « Centre de Recherche en Paléontologie–Paris » CNRS-Sorbonne Université-MNHN, Université Pierre et Marie Curie, T. 46-56, 5e Étage, Case 104, 4, Place Jussieu, 75252 Paris Cedex 05, France;1. Laboratoire de Géologie de Lyon : Terre, Planète et Environnement, UMR CNRS 5276 (CNRS, ENS, Université Lyon 1), École Normale Supérieure de Lyon, 69364 Lyon cedex 07, France;2. Palaeontological Research and Education Centre, Mahasarakham University, 44150 Khamrieng, Thailand;3. Laboratoire de Géologie de l’Ecole Normale Supérieure, CNRS (UMR 8538), 24 rue Lhomond, 75231 Paris cedex 05, France;1. Northeastern Research Institute of Petrified Wood and Mineral Resources, Nakhon Ratchasima Rajabhat University, 30000 Nakhon Ratchasima, Thailand;2. Biology Program, Faculty of Science and Technology, Nakhon Ratchasima Rajabhat University, 30000 Nakhon Ratchasima, Thailand;3. Palaeontological Research and Education Centre, Mahasarakham University, 44150 Maha Sarakham, Thailand;4. Department of Biology, Faculty of Science, Mahasarakham University, 44150 Maha Sarakham, Thailand;5. Independent Researcher, 10900 Bangkok, Thailand;6. Institut des sciences de l’évolution de Montpellier, Université de Montpellier, UMR UM-CNRS-IRD-EPHE, 2, place Eugène-Bataillon, 34095 Montpellier cedex 5, France;1. Palaeontological Research and Education Centre, Mahasarakham University, Mahasarakham 44150, Thailand;2. Prehistoric Population and Cultural Dynamics in Highland Pang Mapha Project 6 th Floor, Princess Maha Chakri Sirindhorn Anthropology Centre, 20 Baromaratchachonnani Road, Taling Chan, Bangkok 10170, Thailand
Abstract:Isolated theropod dinosaur teeth from Ko Kut (Kut Island) in eastern Thailand are referred to an indeterminate spinosaurid on the basis of their morphology and ornamentation. On the basis of other spinosaurid occurrences in Thailand and other parts of Asia, they support the attribution of the fossil-bearing beds on Ko Kut to the Lower Cretaceous rather than the Jurassic. The lack of ornithischian remains in the Ko Kut faunal assemblage suggests that it is coeval with the Sao Khua Formation (Barremian) of NE Thailand.
Keywords:Dinosauria  Theropoda  Spinosauridae  Kut Island  Thailand  Early Cretaceous  Dinosauria  Theropoda  Spinosauridae  île de Kut  Thaïlande  Crétacé inférieur
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