As a fun fact, humans and worms have a common hypothetical ancestor we call “urbilateria”, likely living over 550-600 million years ago, before the Cambrian exp

As a fun fact, humans and worms have a common hypothetical ancestor we call “urbilateria”, likely living over 550-600 million years ago, before the Cambrian explosion. This ancestor gave rise to a branch called protosomes (worms, insects, mollusks) and another branch called deutorosomes (which includes humans and other vertebrates). Worms and humans share: bilateral body organization, a digestive tract, basic nerve structures, many shared genes that control body development.