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Batrachia, derived from the Greek word 'batrakhos' meaning frog, is an infraorder within the amphibian class that primarily consists of tailless amphibians, namely frogs and toads. These creatures are characterized by their moist skin, which aids in respiration, and their complex life cycle involving aquatic larval stages followed by terrestrial adult stages. Batrachia species vary greatly in size, coloration, and behavior, with some exhibiting exceptional jumping abilities while others rely on camouflage for protection. They are found worldwide, with the exception of Antarctica, and play crucial ecological roles as both predators and prey in their respective ecosystems. Batrachia species have been around since the Carboniferous period, leaving behind numerous fossils that provide valuable insights into their evolutionary history.