(University of Missouri-Columbia) An analysis of tubular fossils by scientists led by Jim Schiffbauer at the University of Missouri provides evidence of a 550-million-year-old digestive tract — one of the oldest known examples of fossilized internal anatomical structures — and reveals what scientists believe is a possible answer to the question of how these animals are connected.

Original source: https://www.eurekalert.org/pub_releases/2020-01/uom-msf011020.php