Limbless vertebrate

Many vertebrates have evolved limbless, limb-reduced, or apodous forms. Reptiles have on a number of occasions evolved into limbless forms – snakes, amphisbaenia, and legless lizards. The same is true of amphibians – caecilians, Sirenidae, Amphiumidae and at least three extinct groups. Larval amphibians, tadpoles, are also often limbless.


Many vertebrates have evolved limbless, limb-reduced, or apodous forms. Reptiles have on a number of occasions evolved into limbless forms – snakes, amphisbaenia, and legless lizards. The same is true of amphibians – caecilians, Sirenidae, Amphiumidae and at least three extinct groups. Larval amphibians, tadpoles, are also often limbless.
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