Outline: a typical ornithopod

Khok Kruat Fm., ThailandNamed 2015

Sirindhorna

Lived
121 to 113 million years ago, Early Cretaceous
Diet
Herbivore
Group
Ornithopods
Found in
Thailand
Named by
Shibata et al. 2015

Where its fossils were found

The evidence

Today

1 find

115 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Sirindhorna

What it was like

Sirindhorna was a plant eater, an early relative of the duck-billed dinosaurs. It is known from a well-preserved braincase and other skull bones.

Its world

It lived about 121 to 113 million years ago, in the Early Cretaceous, in what is now Thailand. Its bones come from the Khok Kruat Formation, where it shared the land with the predator Siamraptor and the small horned Psittacosaurus.

How it was found

Shibata and colleagues named it in 2015. The name honors a princess of Thailand.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Hadrosauroidea

Sources: WikidataNamed in: M. Shibata, P. Jintasakul, and Y. Azuma, H.-L. You. 2015. A new basal hadrosauroid dinosaur from the Lower Cretaceous Khok Kruat Formation in Nakhon Ratchasima Province, Northeastern Thailand. PLoS One 10((12):e0145904