Ammonites were thriving before their extinction 66 million years ago, contrary to previous beliefs. New research from the University of Bristol shows that regional variations in fossil records reveal a complex picture of ammonite speciation and extinction rates, challenging the idea of a long-term decline. Ammonites basking under the Late Cretaceous sun. Credit: Artwork by Callum Pursall
Recent findings from the DOI: 10.1038/s41467-024-49462-z