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Ratchasimasaurus, new Asian iguanodontian

From: Ben Creisler

New dinosaur:

Masateru SHIBATA, Pratueng JINTASAKUL, & Yoichi AZUMA  (2011)
A New Iguanodontian Dinosaur from the Lower Cretaceous Khok Kruat
Formation, Nakhon Ratchasima in Northeastern Thailand.
Acta Geologica Sinica - English Edition 85(5): 969?976
DOI: 10.1111/j.1755-6724.2011.00230.x

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.

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