A 540-million-year-old fossil is rewriting evolution Over 500 million years ago, the Cambrian Period sparked an explosion of skeletal creativity. Salterella, a peculiar fossil, defied conventions by combining two different mineral-building methods. After decades of confusion, scientists have linked it to the cnidarian family. The find deepens our understanding of how animals first learned to build their own skeletons.
https://www.sciencedaily.com/r....eleases/2025/11/2511