tetrapod amphibian 597.6 597.8 http://id.loc.gov/authorities/subjects/sh85004598 http://purl.bioontology.org/ontology/MESH/D000663 http://purl.obolibrary.org/obo/NCBITaxon_8292 http://purl.obolibrary.org/obo/NCIT_C14180 https://en.wikipedia.org/wiki/Amphibian https://en.wikipedia.org/wiki/Category:Amphibians https://species.wikimedia.org/wiki/Amphibia https://www.wikidata.org/wiki/Q10908 QL640-QL669.8 A taxonomic class of vertebrates that include frogs, toads, newts, salamanders, and gymnophiona. Amphibians are cold blooded land animals that lay eggs in the water. The juveniles of this class metamorphose from water-breathing organisms to air-breathing organisms upon adult maturation. Amphibia amphibians