Triple hinge

日期:2019-03-07 08:13:04 作者:赖吣 阅读:

A SNAKE as thin as a strand of spaghetti has the most flexible jaw in the vertebrate world, allowing it to gobble up its favourite food of ant larvae at a rate of nearly one per second. “Everything you know about how snakes eat is different in the threadsnake,” says biologist Nathan Kley of the University of Massachusetts in Amherst. As Kley and his colleague Elisabeth Brainerd report in Nature (vol 402, p 369), the threadsnake has three extra hinges in its lower jaw that allow the sides to bend outward in a “cartoon smile” while the tip of the chin caves back toward the throat,