The Linnaean system is the way that scientists arrange and describe and catalog living things. They define a kingdom, a phylum, a class, an order; then a family, a genus, and a species. Humans are in the kingdom of animals. We’re in the phylum of chordates, the sub-phylum of vertebrates, that is all the animals with bony backbones. We’re in the class of mammals, the order of primates, the family of hominids, the genus Homo, and the species sapiens.