Reverse engineering mysterious 500-million-year-old fossils that confound our tree of life
- Written by Simon Darroch, Assistant Professor of Earth and Environmental Sciences, Vanderbilt University

Paleontologists like us are used to working with fossils that would seem bizarre to many biologists accustomed to living creatures. And as we go farther back in Earth’s history, the fossils start to look even weirder. They lack...