articleBrandon Specktord62aad6a-db23-56f9-90a1-213b7c803775fncfnc/sciencefox-news/columns/digging-historyfox-news/sciencefox-news/science/archaeology/fossilsLiveScienceTechnology
This primeval worm may be the ancestor of all animals
An artist’s making of Ikaria wariootia and its 555- million-year-old burrow. (Credit: Sohail Wasif/ UCR)…