It is the uppermost formation of the Khorat Group.

[1] It is dated to the Aptian stage of the Early Cretaceous period, and is notable for its fossils of dinosaurs.

It is equivalent to the Gres superieurs Formation of Laos.

[2] The group is a fluvial formation consisting primarily of red siltstones and sandstones.

[1] The Khok Kruat Formation has yielded remains of sharks, fishes, turtles, crocodilians and pterosaurs.