• Vertebrates are animals with an internal skeleton and a spinal column, or backbone. Vertebrae are the bones that make up a vertebrate's spinal column. The vertebrae surround and protect the spinal cord, which replaces the notochord found in the more primitive members of the phylum Chordata. Fish, amphibians, reptiles], birds, mammals, primates, rodents and marsupials are all vertebrates which belong to the sub-phylum Vertebrata. Although vertebrates are a minor portion of the animal kingdom, they tend to dominate their environment due to their size and mobility. http://virtualology.com/Phylumchordata/Vertebrata.org/ http://www.kidport.com/RefLib/Science/Animals/AnimalIndexV.htm

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