Northeastern Thailand holds a rich record of ancient life preserved within the sedimentary rocks of the Khorat Plateau. Layers of sandstone, siltstone, and mudstone formed in environments shaped by rivers and floodplains, preserving evidence of ancient vertebrates and prehistoric landscapes.
The Discovery
Thailand's first reported dinosaur fossil was discovered in 1976 when a geologist uncovered a bone during uranium exploration. Scientists later identified this initial find as part of a dinosaur's left knee. Systematic excavation work began in 1981 at Phu Wiang, bringing more fossilized bones and trackways to light. Many of these discoveries date back to the Early Cretaceous period, roughly 130 million years ago.
What Scientists Found
Research across local rock formations, including the Sao Khua Formation, has documented a wide range of prehistoric evidence:
- Fossilized Bones: Excavations yielded remains of sauropods, which are long-necked, plant-eating dinosaurs. Sauropods are among the most abundant dinosaurs reported in the Sao Khua Formation.
- Fossil Eggs: Discovered at Phu Phok in Sakon Nakhon, Early Cretaceous fossil eggs in floodplain sediments offer clues regarding ancient nesting and burial settings.
- Trackways: Preserved footprints in rock display shapes and spacing that reveal how ancient animals moved across soft ground.
Why It Matters
Combining physical bones, fossil eggs, and footprints provides a clearer picture of ancient animals and their habitats than any single fossil type could offer alone. Beyond research field localities, museum collections—such as the Sirindhorn Museum in Kalasin and the museum near Phu Wiang National Park—present regional finds to help visitors visualize these ancient creatures.
Travelers planning to visit should note that access varies by location. While Phu Wiang features nine excavation sites, only four are available to visitors. Opening hours and admission fees are not specified in the source; please check the official notice.
Source: dinosaur fossil discovery - BingNews · Published October 22, 2026 · Photo by Ecrinn Burgazlı on Unsplash