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Clade

A clade is a group of animals which comprises an ancestor and all of its descendants. – for example the subfamily Homininae, is a clade which includes humans, gorillas, chimpanzees, and extinct relatives (all hominids that arose after the split from orangutans). The Homininae is incouded in the Hominidae, a more inclusive clade which includes this, and the orangutans/their extinct relatives.