Amphibians Urodela (salamanders, newts) Terrestrial, aquatic: ~550 species
Amphibians Urodela (salamanders, newts) Terrestrial, aquatic: ~550 species Retain tails as adults (paedomorphic character) Fertilization usually internal Anura (frogs, toads) Terrestrial, aquatic: ~5400 species Possess tails as juveniles; not in adults Fertilization usually external
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