See text 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, anenomes) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (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... This article needs to be cleaned up to conform to a higher standard of quality. ... Families Raphidae Columbidae The order Columbiformes includes three families of birds: the Raphidae, to which the extinct Dodo and Rodrigues Solitaires belonged, the Columbidae, which includes the very widespread and successful doves and pigeons, and the Pteroclidae, to which the sand grouse belong. ... Pigeon redirects here. ... John Gould (September 14, 1804 - February 3, 1881), was an English ornithologist. ...