Siamodon

Say it like this: “si-am-o-don”

Siamodon nimngami

Siamodon ate plants and walked on two or four legs. It lived in the Early Cretaceous. Bones have been found in Thailand.

Quiz me on Siamodon

When: Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago
Named in: 2011 · Buffetaut, E.; Suteethorn, V.
Hip height: Not established
Length: 5.7 m · 19 ft
Weight: Not established
Found in: Thailand · Khok Kruat
Food and walking: Herbivore · Two or four legs
Kind: beaked plant-eater · Ornithopod
Family branch: Hadrosauroidea

The story in short

The genus Siamodon dates to 2011, the year E. Buffetaut and V. Suteethorn described it. The name honors a person tied to the fossil or its study.

Fossils referred to Siamodon date to the Early Cretaceous (Aptian), roughly 121.4 to 113.2 million years ago. Finds come from Thailand, including the Khok Kruat Formation. It was a herbivore and could move on two or four legs.

Published estimates put Siamodon at a length near 5.7 m.

On the family tree it sits in Hadrosauroidea, among the ornithopod dinosaurs.

Close relatives

Altirhinus

Altirhinus kurzanovi

Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago

Batyrosaurus

Batyrosaurus rozhdestvenskyi

Late Cretaceous (Santonian · Campanian) · roughly 85.7 to 72.2 million years ago

Bolong

Bolong yixianensis

Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago