The australopithecine specimen known as 'Lucy' is approximately 3 million years old.
Notes on verification
Multiple authoritative, independent sources (IHO, Smithsonian, Britannica, NHM) consistently confirm Lucy's age at ~3.18 million years, based on argon-argon radiometric dating. [cascade flags: aggregator_dropped_primary_exists,wikipedia_dropped_other_sources_exist | tier=silver indep_score=1.0 clusters=4 claim_tier=everyday | framework convergence=single on 40Ar/39Ar (argon-argon) radiometric dating of volcanic ash layers at Hadar, Ethiopia (upstreams: Institute of Human Origins geochronology lab (Robert Walter, Derek York argon-argon dating)) — publishers independent, evidence may not be | kind=empirical eligibility=high]
Sources
- New species of ancient human discovered in the Philippines (seed:science_and_space)
- https://www.nhm.ac.uk/discover/australopithecus-afarensis-lucy-species.html (corroboration)
- https://iho.asu.edu/aboutLucy (corroboration)
- https://humanorigins.si.edu/evidence/dating (corroboration)
- https://www.smithsonianmag.com/smart-news/lucy-australopithecus-turns-41-180957384/ (corroboration)