Our earliest ever ancestor had a big mouth and spewed – er –

Humanity’s earliest ancestor was dug up a while ago. Well, when I say ‘our’ ancestor, it’s also the ancestor of fish, amphibians, reptiles and starfish among other things. It’s  540 million years old, it’s called Saccorhytus coronarius, and it’s a primitive deuterosome, a type is thought to be one of the earliest common ancestors of quite … More Our earliest ever ancestor had a big mouth and spewed – er –