158KiB, 557x768, Haeckel_Calcispongiae.jpg View SameGoogleiqdbSauceNAO Anonymous Tue 31 Mar 00:18:50 2020 No.11516599 ViewReplyOriginalReport Quoted By: >>11516603 >>11516813 What is the relation of the Calcarea sponge class with the rest of the sponges, and the rest of metazoans? Is it true that they're more related to us than they are to the other types of sponges? Is Porifera paraphyletic?