Albert Poustka from the Max Planck Institute for Molecular Genetics and a group of international scientists in Berlin discovered that the Xenoturbellida and the Acoelomorph worms are more closely related to more complex organisms like humans and sea urchins than previously assumed. They are both simple marine worms.The Xenoturbellida and the Aceolomorphy according to what the scientists have discovered share an ancestor with the Duestromes descend. They believe that they once had more characteristics but lost them over time, which they say is typical for Duestromes. They found the ancestor descend in a test of "mini" genes (microRNA) and amino acids from the mitochondrial genomes of Acoelomorpha and Xenoturbellida.
I liked this a lot since we just learned about this in class and for once I sort of new what these kinds of articles were talking about. Its pretty amazing how fast an organism can be changed in the Tree of Life and made as a new phylum more closely related to something.
Source: http://www.physorg.com/news/2011-02-xenacoelomorpha-phylum-animal-kingdom.html
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