Ratchasimasaurus

Ratchasimasaurus
Temporal range: Early Cretaceous, Aptian
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Order: Ornithischia
Suborder: Ornithopoda
Clade: Iguanodontia
Genus: Ratchasimasaurus
Shibata, Jintasakul, & Azuma, 2011
Species:  R. suranareae
Binomial name
Ratchasimasaurus suranareae
Shibata, Jintasakul, & Azuma, 2011

Ratchasimasaurus is a genus of non-hadrosaurid iguanodontian ornithopod dinosaur from Early Cretaceous (Aptian stage) Khok Kruat Formation of Nakhon Ratchasima Province in northeastern Thailand. One autapomorphy (unique characteristic) of Ratchasimasaurus is its elongated and flat ramus of the dentary. Ratchasimasaurus shows both primitive and derived characters for Iguanodontia, such as "a caudally inclined coronoid process and alveolar trough with a primitive crown impression, and a derived buccal shelf between the tooth row and the coronoid process."[1]

References

  1. Masateru Shibata, Pratueng Jintasakul, and 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.
Wikispecies has information related to: Ratchasimasaurus
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