Phylum Porifera

Here is the instruction.

Some recent molecular studies suggest that surprising hypothesis that phylum Porifera is paraphyletic, rather than monophyletic.
Giving Careful consideration to multiple sources of evidence (e.g molecular phylogenetics, comparative morphology, comparative embryologoy),
critically evaluate existing support for this hypothesis. If sponges are paraphyletic, what does this suggest about the ancestort to bilaterians?
Your essay should be developed in an explicit phylogenetic context and should present your well-defended position about the relationship of sponges
clades to one another and to other metazoans, and your views regarding what this phylogeny suggests about the evolution of Metazoans.
And it should contain about 3-5 scientific articles at least.

This paper should be mostly about my ideas and anaysies, not those of someone else.

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