Siamraptor

Say it like this: “SY-am-RAP-tor”

Siamraptor suwati

Siamraptor ate meat and walked on two legs. It lived in the Early Cretaceous. Bones have been found in Thailand.

Quiz me on Siamraptor

When: Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago
Named in: 2019 · Chokchaloemwong, D.; Hattori, S.; Cuesta, E.; Jintasakul, P.; Shibata, M.; Azuma, Y.
Hip height: 2.1 m · 7 ft
Length: 8 m · 26 ft
Weight: 1.2 tonnes
Found in: Thailand · Khok Kruat
Food and walking: Carnivore · Two legs
Kind: sharp-clawed runner · Theropod
Family branch: Carcharodontosauria

The story in short

The genus Siamraptor dates to 2019, the year D. Chokchaloemwong and colleagues described it. The name means “siamese plunderer.”

Fossils referred to Siamraptor 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 carnivore and walked on two legs.

Published estimates put Siamraptor at a length near 8 m, hips about 2.1 m high, and a body mass around 1.2 tonnes.

On the family tree it sits in Carcharodontosauria, among the theropod dinosaurs.

Close relatives

Lusovenator

Lusovenator santosi

Late Jurassic (Kimmeridgian · Tithonian) · roughly 154.8 to 143.1 million years ago

Neovenator

Neovenator salerii

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

Ulughbegsaurus

Ulughbegsaurus uzbekistanensis

Late Cretaceous (Turonian) · roughly 93.9 to 89.8 million years ago