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Tree of Life Reconstructed
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Tree of Life Reconstructed

July 27, 2010
The comb jelly could only have achieved its apparent seniority over the simpler sponge through one of two new evolutionary scenarios: 1) The comb jelly evolved its complexity independently of other animals, after it branched off onto its own evolutionary path; or 2) the sponge evolved its simple form from more complex creatures.


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