Is your oldest sister a warty comb jelly?

December 12, 2013 8:32 PM

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A paper published this week in 'Science' is revising the lowest branches on the animal kingdom's evolutionary tree, as well as upending how evolution is thought to progress. 

That might not sound too flattering, but it’s an improvement. Until now, our earliest relatives, the first branch in the animal kingdom’s proverbial tree, were thought to be sponges, the sessile, collagen wads.

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