The naming of Nagatitan chaiyaphumensis from Thailand's Khok Kruat Formation provides the first quantitative body-size estimate for a somphospondylan sauropod in mainland Southeast Asia, yet the find's placement in the Early Cretaceous (approximately 100-120 Ma) directly contradicts the editorial framing of it as a Late Cretaceous marker. Lead author Thitiwoot Sethapanichsakul's team at UCL and Thai institutions measured a 1.78 m humerus, partial dorsal vertebrae, ribs, and pelvic elements from a single individual recovered near a paleoriver margin; using scaling equations calibrated on extant archosaurs and other euhelopodids, they arrived at 27 m total length and 27 tonnes. This methodology relies on fragmentary material, introducing uncertainty in limb-to-body proportions typical of incomplete sauropod descriptions. The specimen's assignment to Euhelopodidae rather than true Titanosauria highlights an older, endemic Asian radiation that dispersed across what is now China, Mongolia, and Thailand well before the terminal Cretaceous titanosaur diversification. Earlier Thai sauropod reports (e.g., Phuwiangosaurus sirindhornae, 1997) and Chinese taxa such as Ruyangosaurus (Lü et al., 2009, Cretaceous Research) show parallel vertebral laminae and femoral robusticity, suggesting repeated vicariance or corridor dispersal across the Indochina block rather than a singular 'last' event. The ScienceDaily release correctly notes the 14th Thai dinosaur species but underplays the formation's precise biostratigraphy and the absence of any post-100 Ma dinosaur-bearing strata in the region due to marine transgression. A life-size mount now stands at the Thainosaur Museum, yet without additional elements or histological sampling, body-mass estimates remain provisional. The discovery nonetheless tightens constraints on Early Cretaceous ecosystem structure, co-occurring with spinosaurids, carcharodontosaurians, and pterosaurs in a semi-arid fluvial setting.