Komodo dragon collision between Australia and Southeast Asia allowed these larger varanids to move back into what is now the Indonesian archipelago, extending their range as far east as the island of Timor. The Komodo dragon was believed to have differentiated from its Australian ancestors 4 million years ago. However, recent fossil evidence from Queensland suggests the Komodo dragon actually evolved in Australia before spreading to Indonesia. Dramatic lowering of sea level during the last glacial period uncovered extensive stretches of continental shelf that the Komodo dragon colonised, becoming isolated in their present island range as sea levels rose afterwards. Extinct Pliocene
Sharp-mouthed lizard related to other species within the same island than to species of adjacent islands. Even though species divergence occurred independently on each island, the same set of ecomorphs (habitat specialists) have evolved on each island. "Anolis pulchellus" is considered a grass-bush anole, occurring primarily in bushes or grass. Sharp-mouthed lizard The Puerto Rican bush anole, snake anole, or sharp-mouthed lizard ("Anolis pulchellus") is a small anole lizard of the family Dactyloidae. The species is among the most common lizards in Puerto Rico, and also native to Vieques, Culebra, and the Virgin Islands (except St. Croix). The sharp-mouthed lizard measures approximately