Class Amphibia

Class Amphibia is a class of Phylum Chordata, Subphylum Vertebrata. The organisms of Class Amphibia go through a metamorpheses during their life time. The hearts of organisms classified under Class Amphiba have 3-chambers. The skin is water-permeable, and the organisms have 4 limbs. An example of an organism classified under Class Amphibia is Notophthalmus viridescens.
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Notophthalmus viridescens