News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   W. Jakob |   Placozoan This is a Trichoplax, a placozoan species. Analysis shows that placozoans are the closest living surrogate to the ancestor of all non-bilaterian animals, such as corals, jelly fish and hydra. A sperm-like species, monosiga, may be the common ancestor to all animals, the studies found. | Discovery News Video   « back to article

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