Siamosaurus was another carnivore to ruled the North-East Thailand 100 million years ago along with Siamotyrannus Isanesis. Siamosaurus was one of Spinosaurus relative that has the same crocodile head like Siamosaurus.
Siamosaurus' food were fishes in the large lakes of the Early Cretacous when Thailand was covered by a inland sea. Like Spinosaurus, Siamosaurus also eat the other dinosaurs which also used to live around the same era. Scientist is trying to find out if Siamosaurus had a sail since it also had a same unique habits like it's relative. But unlike it's relative, Siamosaurus was only 30ft(9.1m), it taller than Siamotyrannus which was a rival for food in that era. Most of this dinosaurs' fossils had been found mostly in North-East of Thailand which made a unique dinosaur for the country.