Figure 7.26

The taxonomic hierarchy. Humans, bonobos (similar to chimpanzees and the closest living relative to humans), and bottlenose dolphins are in the same domain, kingdom, phylum, and class. At the level of orders, they diverge. Dolphins belong to the order Cetacea, whose members are mammals adapted to marine environments. Humans and bonobos are both in the family Hominidae, but they are not in the same genus. Note that only the genus and species are italicized.