Moontanman Posted April 3, 2009 Report Posted April 3, 2009 No Sponge In Human Family Tree: Sponges Descended From Unique AncestorScienceDaily (Apr. 3, 2009) — Since the days of Charles Darwin, researchers are interested in reconstructing the "Tree of Life", and in understanding the development of animal and plant species during their evolutionary history. In the case of vertebrates, this research has already come quite a long way. But there is still much debate about the relationships between the animal groups that made their apparation very early in evolutionary history, probably in the late Precambrian, some 650 to 540 million years ago. No Sponge In Human Family Tree: Sponges Descended From Unique Ancestor Quote
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