SO ENDS this first of two weekends considering Warren Hamilton’s magnetic shield hypothesis of the Cambrian explosion. It is a contribution to tectonics and fossil record ablation that together might start to add up. This period remains one if biology’s most unconvincing stories and has certainly been influenced by cherry-picking geological data.
https://www.sciencedirect.com/science/article/pii/S0012825219302636?via=ihub