Final answer:
The famous fossil 'Lucy' was classified as Australopithecus afarensis, an essential species for understanding human evolution. Her well-preserved fossil remains, found in Ethiopia, have provided significant insight into the early hominin's anatomy and bipedalism.
Step-by-step explanation:
The famous fossil nicknamed "Lucy" was classified as the species Australopithecus afarensis.
Discovered in 1974 by paleoanthropologist Donald Johanson in the Afar region of Ethiopia, Lucy's skeleton was approximately 40 percent complete and provided critical insight into the evolution of hominins.
Lucy's skeleton, marked with the accession number KNM-AL-288, is stored at the Kenya National Museum and hailed from a time period dating to around 3.75-2.8 million years ago.
Despite her small stature, it is now known that Lucy was an adult when she died about 3.2 million years ago.