demise of a three eyed reptile

A three-eyed reptile whose ancestors used to scurry under the feet of dinosaurs could die out as global warming turns them all into males. The sex of tuatara, which look like giant, greenish-brown lizards, depends on the temperature of their nest. When it is above 22 degrees, only males are born, while females are produced at temperatures of about 21 degrees.
The Age, 3 Jul 2008