Siamamia
Siamamia is an extinct genus of ray-finned fish from Northeasthern Thailand. They belong to family Amiidae and are halecomorph fishes endemic to Early Cretaceous freshwater environments in eastern Asia.

Siamamia fossils have been found in Sao Khua Formation, present-day in Phu Phok, Sakhon Nakhon Province, Thailand.

Etymology 
Siam (former name of Thailand), referring to location.
Amia (Greek).
Naga mythological creature in Mekong River

References 

Amiiformes
Prehistoric ray-finned fish genera
Cretaceous bony fish
Early Cretaceous fish of Asia
Taxa named by Varavudh Suteethorn
Taxa named by Éric Buffetaut