Wormlizards: Amphisbaenidae - Geographic Range

IS IT A WORM OR A LIZARD?

Is a wormlizard more like a worm that looks like a lizard, or a lizard that looks like a worm? Animals are split into two major groups: vertebrates, which have backbones, and invertebrates, which do not have backbones. Wormlizards and lizards have backbones, but earthworms do not, so wormlizards are more like lizards than earthworms. In fact, both wormlizards and lizards are reptiles, but wormlizards are not true lizards. Instead, wormlizards are a unique group of reptiles that mostly live underground, have rings of scales separated by shallow grooves, and have a number of other characteristics that separate them from the lizards.