Discovery What Was The Last Common Ancestor of all Life on Earth? Scott Admin posted on 2 years ago — updated on 1 second ago 335 views But it has a grand name, or at least an acronym. It is known as Luca, the Last Universal Common Ancestor, and is estimated to have lived some four billion years ago, when Earth was a mere 560 million years old. discovery earth humans Luca Scott Follow Author, educator, musician, dancer and all around creative type. Founder of "The Happy Now" website and the online jewelry store "Silver and Sage".
