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earliest-known animal

Your oldest ancestor was really weird and had a big mouth

WASHINGTON: Don't take this the wrong way, but your oldest ancestor was not exactly a beauty. Scientists on Monday said a tiny marine creature from China that wriggled in the seabed mud about 540 million years ago may be the earliest-known animal in the lengthy evolutionary path that eventually led to humans. It was a weird-looking beastie with a bag-like body and, for its size, a really big mouth. University of Cambridge paleontologist Simon Conway Morris noted that humans, who appeared a relatively recent 200,000…