Sauropod teeth from the Khorat Group of Thailand suggest the faunal replacement of sauropod dinosaurs across the Late Jurassic–Early Cretaceous

However, their taxonomic and palaeoecological significance has not previously been examined in detail. This research presents the first comprehensive taxonomic identification of isolated sauropod teeth from several localities across the Khorat Plateau in Northeastern and Eastern Thailand.

Based on morphological analyses, these teeth were assigned to four distinct morphotypes. Additionally, multi-quantitative analyses revealed affinities with four sauropod clades: Mamenchisauridae, Brachiosauridae, Somphospondyli, and Dicraeosauridae. The taxonomic framework recovered in this study is consistent with the broader sauropod fossil record of the Khorat Group and reveals a marked faunal shift across the Jurassic–Cretaceous of Thailand.