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
Bolsón night lizard original location of surveyal. The only apparent threat to the lizard is the disturbance of the habitat in which it resides. The habitat is not particularly wide ranging in size, and is concentrated to only a fairly localised area. However, due to a lack of knowledge regarding the species, it is impossible to determine the impacts of habitat encroachment until a later interval. Bolsón night lizard The Bolsón night lizard ("Xantusia bolsonae") is a species of night lizard described by Webb in 1970. It is endemic to the state of Durango in Mexico. Not much is known about the lizard