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
Texas alligator lizard Texas alligator lizard The Texas alligator lizard ("Gerrhonotus infernalis") is a species of lizard in the subfamily Gerrhonotinae found in the central region of the American state of Texas, and south into Mexico. The Texas alligator lizard is a medium-sized lizard, attaining a maximum total length (including tail) around . It is the largest lizard species in Texas, and one of the largest alligator lizards in the world. These lizards have flat, wedge-shaped heads. They are generally a yellow-brown color, often with darker brown and white checker patterning on their dorsal surfaces, and uniformly light-colored, white, or grey on their