來自 Hong Kong
I think the molecular clock evidence had actually showed the radiation of modern animal taxa much early in time like 800-1200 mya instead of the beginning of cambrian explosion.
https://academic.oup.com/mbe/art ... upport-the-Cambrian
However, given the sudden appear of biodiversity right after the snowball earth event until early cambrian instead of other time period, it will be interesting to understand what condition/ advantage at that time period favor multicellular or complex life evolution at that period instead of earlier or later time period. Given the overwhelming of evidence in these two decades, it may be a great PhD thesis idea to go