Genus: Phuwiangosaurus MARTIN, BUFFETAUT, & SUTEETHORN, 1994
Etymology: In reference to the Phu Wiang locality, and Greek, sauros, “lizard”: “Phu Wiang lizard”.

Species: sirindhornae MARTIN, BUFFETAUT & SUTEETHORN, 1994
Etymology: In honor of Son Altesse, Royal Princess of Thailand.

Referred material:

SUTEETHORN, LE LOEUFF, BUFFETAUT, SUTEETHORN, TALUBMOOK, & CHONGLAKMANI, 2009

Locality: Ban Na Khrai locality, Khagwat, Kalasin Province, NE Thailand.

Horizon: Sao Khua Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

SM K11-0092: Cervical rib. Note: With tooth marks.