(A) (B)
FIGURE 15.6. Two of the oldest known relatively
complete hominid skeletons. (A) The skeleton
known as “Lucy,” the nearly complete specimen of
Australopithecus afarensis from rocks 3.4 million years
old in Ethiopia. (Courtesy D. Johanson, Institute of
Human Origins) (B) The famous “Nariokotome
Boy,” KNM-WT 15000, a nearly complete skeleton
of Homo ergaster (formerly referred to Homo erectus),
from rocks 1.6 million years old on the western
shores of Lake Turkana, Kenya. (Courtesy A. Walker)