What is the scientific name for the extinct hominin known as "Lucy"?

The story behind the answer

“Lucy” is the famous 3.2-million-year-old partial skeleton discovered in 1974 at Hadar in Ethiopia’s Afar region; hence her species name, Australopithecus afarensis. Her pelvis and knee show clear adaptations for bipedal walking, making A. afarensis a key early hominin on the human evolutionary line.

Context and memory tip: The nickname “Lucy” came from the Beatles song playing at the camp (“Lucy in the Sky with Diamonds”). Remember afarensis = Afar (where she was found). Don’t confuse it with A. africanus, a later species mainly from South Africa; Architeuthis is actually the giant squid genus, and “Antaris” isn’t a recognized hominin. Lucy’s small brain and long arms paired with upright walking illustrate mosaic evolution—human traits emerging at different times.