Clues in the clay: #Scientists narrow the search for the first animals https://news.yale.edu/2023/06/27/clues-clay-scientists-narrow-search-first-animals
#Fossilisation processes and our reading of animal antiquity https://www.cell.com/trends/ecology-evolution/fulltext/S0169-5347(23)00137-4
"They studied areas around the world with #sediments closest to the conditions of the #BurgessShale, particularly deposits with similar #clay compositions. Those sites date to 789 million years ago and older. But none of those sites yielded animal #fossils, implying that #animals had not evolved by that time."
