Ordovician - Recent | image = Naturkundemuseum Berlin - Dinosaurierhalle.jpg | image_width = 250px | image_caption = Fossilized skeleton of a diplodocus, showing an extreme example of the backbone that characterizes the vertebrates | domain = Eukarya | regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | subphylum_authority = Cuvier, 1812 | subdivision_ranks = Groups | subdivision = Fishes Tetrapodes }} Vertebrates are members of the subphylum Vertebrata, chordates with backbones or… (More on Vertebrate)