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Human forebear a bag-like beast with no anus: study

Humans’ earliest known relative was likely an egg-shaped creature that ate and expelled from the same gaping orifice some 540 million years ago, scientists reported Monday. Startlingly well-preserved fossils of the tiny beast, dubbed Saccorhytus, were discovered in central China’s Shaanxi province, they reported in the journal Nature. Several major branches of evolution — one […]