Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Deuterostomia (deuterostomes) Phylum Chordata (chordates) Craniata (craniates) Subphylum Vertebrata (vertebrates) Superclass Gnathostomata (jawed vertebrates) Euteleostomi (bony vertebrates) Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates) Tetrapoda (tetrapods) Class Amphibia (frogs, salamanders, and caecilians) Subclass Lissamphibia (amphibians) Caudata Family Amphiumidae (Amphiumas, Congo Eels) Genus Amphiuma Species Amphiuma means (Two-toed Amphiuma) Species Amphiuma pholeter (One-toed Amphiuma) Species Amphiuma tridactylum (Three-toed Amphiuma)