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Khok Kruat Formation

Khok Kruat Formation
Stratigraphic range: Early Cretaceous (Aptian)
Type Geological formation
Overlies Phu Phan Formation
Location
Region Asia
Country Thailand

The Khok Kruat Formation is a rock formation found in northeastern Thailand. It is one of the formations of the Khorat Group and is the youngest formation in the group. It is of Aptian stage (Early Cretaceous), and is notable for its fossils of dinosaurs. It is equivalent to the Gres superieurs Formation of Laos. The group is a fluvial formation consisting primarily of red siltstones and sandstones.

The Khok Kruat Formation has yielded remains of sharks, fishes, turtles, crocodilians and pterosaurs. Phuwiangosaurus-like teeth, Siamosaurus-like teeth, and fragmentary remains of spinosaurids have also been recovered from it.

Psittacosaurus

P. sattayaraki

"Well preserved left dentary and an incomplete maxilla."

A ceratopsian.

Ratchasimasaurus

R. suranareae

An iguanodontian ornithopod.

Siamodon

S. nimngami

PRC-4, a well-preserved left maxilla, PRC-5, an isolated maxillary tooth and PRC-6, a braincase.

An iguanodontian ornithopod.

Sirindhorna

An iguanodontian ornithopod.


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