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.