1. Darwin envisioned a “tree of life” with branches representing currently living species and the base as the common ancestor of all. As one moved from the braches toward the trunk, one would pass the common ancestors for each species group.
Created: 2019-07-11 21:34:21 CEST (+0200)
Last modified: 2019-07-11 21:34:21 CEST (+0200)