Suravech Suteethorn, deputy director of the Palaeontological Research and Education Centre at Mahasarakham University, uses a pneumatic pen to clean a dinosaur fossil in Mahasarakham on August 18, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

Students visit Phu Wiang Dinosaur Museum in Khon Kaen on August 19, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

Palaeontologist Varavudh Suteethorn (R) and his son Suravech Suteethorn, deputy director of the Palaeontological Research and Education Centre at Mahasarakham University, excavate a dinosaur fossil at Phu Wiang National Park in Khon Kaen on August 19, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

Students visit the Palaeontological Research and Education Centre at Mahasarakham University in Mahasarakham on August 18, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

Palaeontologist Varavudh Suteethorn uses a chisel to excavate a dinosaur fossil at Phu Wiang National Park in Khon Kaen on August 19, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

Palaeontologist Varavudh Suteethorn uses a pneumatic pen to excavate a dinosaur fossil at Phu Wiang National Park in Khon Kaen on August 19, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

Fossilised dinosaur teeth are displayed at Phu Wiang National Park in Khon Kaen on August 19, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON

People visit Phu Wiang Dinosaur Museum in Khon Kaen on August 19, 2026. Researchers have found a trove of dinosaur fossils in Khon Kaeon province, which holds the country's richest deposits, offering insight into the creatures that roamed the planet millions of years ago. (Photo by Chanakarn LAOSARAKHAM / AFP via Getty Images) / To go with AFP story Thailand-dinosaur-science, FOCUS by Montira RUNGJIRAJITTRANON