When scientists discovered the Laotian rock rat, a large, rat-like creature with a thick, hairy tail, they believed that the animal was so different from known rodents that it warranted classification in a new, distinct family called Laonastidae. Shortly thereafter, another group of experts published their assertion that the animal was actually a member of the ancient fossil family Diatomyidae. Under what urban circumstances did researchers find the first Laotian rock rat specimens? Discuss