1. A New Iguanodontian Dinosaur from the Lower Cretaceous Khok Kruat Formation, Nakhon Ratchasima in Northeastern Thailand.
- Author
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SHIBATA, Masateru, JINTASAKUL, Pratueng, and AZUMA, Yoichi
- Subjects
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IGUANODONTIDAE , *DINOSAURS , *CRETACEOUS paleontology , *PROCESSUS coronoideus mandibulae - Abstract
Here we report a new iguanodontian dentary found from the Lower Cretaceous Khok Kruat Formation, Nakhon Ratchasima, northeast Thailand. A unique character, which is an elongated and flat shape of the dentary ramus, makes it possible to assign the specimen to the new genus of non-hadrosaurid iguanodontian, Ratchasimasaurus suranareae gen. et sp. nov. R. suranareae shows both primitive and derived characters, such as a caudally inclined coronoid process and alveolar trough with a primitive crown impression, and a derived buccal shelf between tooth row and coronoid process. The discovery of a new iguanodontian from the Indochina Terrene, considering that the previously reported ' Probactrosaurus-like' iguanodontian, points out a great diversity of this group in the late Early Cretaceous in Thailand, and corresponds to the Asian iguanodontian diversity at that time. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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