Outline: a typical ornithopod

Khok Kruat Fm., ThailandNamed 2011

Ratchasimasaurus

"Ratchasima lizard"

Lived
121 to 113 million years ago, Early Cretaceous
Diet
Herbivore
Group
Ornithopods
Found in
Thailand
Named by
Shibata et al. 2011

Where its fossils were found

The evidence

Today

1 find

115 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Ratchasimasaurus

What it was like

Ratchasimasaurus was a plant eater related to Iguanodon. It is known from a lower jaw bone.

Its world

It lived in the Early Cretaceous in what is now Thailand. Its bones come from the Khok Kruat Formation, where it shared the land with the plant eaters Siamodon and Sirindhorna and the predator Siamraptor.

How it was found

Shibata and colleagues named it in 2011. It is named after the province where it was found.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Hadrosauroidea

Sources: WikidataNamed in: M. Shibata, P. Jintasakul, and Y. Azuma. 2011. A new iguanodontian dinosaur from the Lower Cretaceous Khok Kruat Formation, Nakon Ratchasima in northeastern Thailand. Acta Geologica Sinica (English Edition) 85(5):969-976