22. Hypotheses about the Metazoa – 2

It’s a zoanthid colony – volcanos fringed with fingers.The photo is lit and magnified but the green is real (a shot of the colony from further away is here).Zoanthids are a kind of coral, so they are Cnidarians, along with jellyfish and anemones.

This post continues directly from the previous one, which was about a possible revision to our picture of the early history of animals. The revision being debated is about the sequence of early evolutionary branchings in this part of the tree of lif...