"Ossea Batsch, 1788
Vertebrates /ˈvɜːrtɪbrɪts/ comprise all species of animals within the subphylum Vertebrata /-eɪ/ (chordates with backbones). Vertebrates represent the overwhelming majority of the phylum Chordata, ...
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with currently about 69,276 species described. Vertebrates include such groups as the following:
jawless fishesjawed vertebrates, which include the cartilaginous fishes (sharks, rays, and ratfish)tetrapods, which include amphibians, reptiles, birds and mammalsbony fishesExtant vertebrates range in size from the frog species Paedophryne amauensis, at as little as 7.7 mm (0.30 in), to the blue whale, at up to 33 m (108 ft). Vertebrates make up less than five percent of all described animal species; the rest are invertebrates, which lack vertebral columns." - (en.wikipedia.org 24.09.2019)
