Genus: Nagatitan SETHAPANICHSAKUI, KHANSUBHA, MANITKOON, HANTA, MANNION & UPCHURCH, 2026
Etymology: Naga, in reference to the mythological serpent-like creature found in various Asian cultures, especially in northeastern Thailand, often associated with water adn Buddhism, and Greek, titan, "giant."

Species: chaiyaphumensis SETHAPANICHSAKUI, KHANSUBHA, MANITKOON, HANTA, MANNION & UPCHURCH, 2026
Etymology: In reference to the province of Chaiyaphum, Thailand.

Holotype: SM2025-1 to SM2025-1-556

Locality: Ban Pha nang Sua, Nong Bua Rawe Distict, Chaiyaphum Province, Thailand.

Horizon: Khok Kruat Formaiton.

Biostratigraphy:

Age: Aptian-Albian Stage, Early Gallic Subepoch, Late Early Cretaceous Epoch, Late Early Cretaceous.

Material: 4 dorsal vertebrae, 5 dorsal ribs, 4 sacral vertebre, 5 sacral ribs, right humerus, right ilium, left and right pubis adn a mostly complete femur.