Krabi:The fossil of a newly identified species, named "Sirindhorn Giant Rat," has been discovered in the Bang Mak coal basin in Krabi Province. This ancient rodent, dating back 33-35 million years, represents a new genus and species, and is considered a significant find in the world of paleontology.
According to Thai News Agency, the fossil was named "Sirindhorn's giant rat" (Yakamys sirindhornae) in honor of Her Royal Highness Princess Maha Chakri Sirindhorn, who has been a strong advocate for science and paleontology in Thailand. The research, a collaboration between the Department of Mineral Resources and international researchers, is set to be published in the journal Scientific Reports on November 4, 2026.
The study was led by Dr. Yaowaluk Chaimanee from the French National Centre for Research, alongside researchers from France and Canada. Utilizing advanced scientific techniques, the team analyzed fossilized molars and incisors found at the site, identifying the creature as an ancient rodent from the late Eocene epoch. Weighing approximately 30 kilograms, it is the largest rodent discovered from the Paleogene period, suggesting that rodents evolved larger sizes much earlier than previously thought.
Mr. Suchart Chomklin, Minister of Natural Resources and Environment, emphasized the importance of this discovery in enhancing understanding of rodent evolution. He highlighted the role of the Department of Mineral Resources and Thai researchers in contributing to global paleontological research, and the potential of Krabi's fossil sites as significant natural heritage locations. The ministry is committed to supporting further research and conservation efforts to promote Thailand's geological heritage on the international stage.