Ansonia is a small genus of true toads. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... Typical Classes Subphylum Urochordata - Tunicatas Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... For other uses, see Amphibian (disambiguation). ... Suborders Archaeobatrachia Mesobatrachia Neobatrachia The Anura is the order of animals in the class Amphibia that includes frogs and toads. ... For other uses, see Toad (disambiguation). ... Ferdinand Stoliczka (May 1838 - June 19, 1874) was an Austrian/Czech palaeontologist born at Hochwald in Moravia. ... For other uses, see Toad (disambiguation). ...