The only known hominid fossils of that age in that location are those of Lucy and her kind, the small-brained but upright-walking hominids classified as Australopithecus afarensis. Some analysts ...

where some of paleoanthropology's most iconic fossils have been found The history of anthropology is littered with many now-defunct hominid species that no longer have a place on the human family ...

And this list is getting longer. As scientists discover new fossils, the hominid family tree grows new branches. But fossils are often difficult to categorize neatly as one species or another.