Vertebrates

animals that possess a backbone and an internal skeleton made of bone or cartilage. The individual bones which make up the spine or backbone are the vertebrae
Found on http://www.sedgwickmuseum.org/education/glossary.html

vertebrates

Animals having a vertebral column, members of the phylum chordata, subphylum vertebrata comprising mammals, birds, reptiles, amphibians, and fishes. ... (12 Dec 1998) ...
Found on http://www.mondofacto.com/facts/dictionary?vertebrates

vertebrates

Animals with backbones and skeletons
Found on http://idahoptv.org/dialogue4kids/season12/snakes/glossary.cfm

Vertebrates

animals with a backbone, including fish (sharks, rays and bony fish), amphibians, reptiles and mammals. See also invertebrates.
Found on http://en.wikipedia.org/wiki/Glossary_of_fishery_terms
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