Ratchasimasaurus

Ratchasimasaurus
Temporal range: Early Cretaceous, Aptian
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Clade:Dinosauria
Order:†Ornithischia
Suborder:†Ornithopoda
Clade:†Iguanodontia
Genus:†Ratchasimasaurus
Shibata, Jintasakul, & Azuma, 2011
Type species
Ratchasiamsaurus suranaerae
Shibata, Jintasakul, & Azuma, 2011

Ratchasimasaurus (meaning "Ratchasima lizard") is a genus of non-hadrosaurid iguanodontian ornithopod dinosaur from Early Cretaceous (Aptian stage) Khok Kruat Formation of Nakhon Ratchasima Province in northeastern Thailand. The type and only species is R. suranareae, named after Thao Suranari, a 19th-century war heroine.[1] It was considered by one study to be a nomen dubium, diagnosed with characters widespread in Styracosterna.[2]

Description

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. 1 2 Shibata M., Jintasakul P., Azuma Y. (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.1755-6724.2011.00530.x.
  2. ↑ https://search.proquest.com/openview/42543b305a3b88729fcee50eb5892a5d/1?pq-origsite=gscholar&cbl=18750&diss=y


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.