One giant step for mankind.
Lemonick
M D
MD
Dorfman
A
A
D000818:Animals; D005075:Biological Evolution; D005002:Ethiopia; D005580:Fossils; D019015:Geologic Sediments; D015186:Hominidae / Q000033:anatomy & histology*; D006801:Humans; D010163:Paleontology; D012863:Skeleton