from the bbc article: "The researchers did find some similarities to other animal groupings, such as the Cnidaria - the phylum that comprises corals and jellyf

from the bbc article: "The researchers did find some similarities to other animal groupings, such as the Cnidaria - the phylum that comprises corals and jellyfish - and the Ctenophora, which includes the marine organisms known as comb jellies. But the new organisms did not fulfil all the criteria required for inclusion in either of those categories." and "One way to resolve the question surrounding Dendrogramma's affinities would be to examine its DNA, but new specimens will need to be found. " made me think this announcement was more about how to place it in our existing taxonomy, and that it reminds to be scene if it really has no common ancestor that we're aware of, as we're still waiting a DNA examination.