Taxonomy of the animals (Hutchins et al., 2003)

The taxonomy of the animals presented by Hutchins et al. in 2003[1] in Grzimek's Animal Life Encyclopedia is a system of classification which covers all the metazoans, from phyla to orders (or families, for Hexapoda and Pisces, or species, for Amphibia, Reptilia, Aves and Mammalia).