Scientists uncovered something unexpected in the fossilized embryo of a worm-like creature from the Cambrian period: the remains of a tiny, doughnut-shaped brain in the primordial animal s head.
A big catch of fish fossils in southern China includes the oldest teeth ever found — and may help scientists learn how our aquatic ancestors got their jaws.
A trove of fossils in China, unearthed in rock dating back some 436 million years, has revealed for the first time that the mysterious galeaspids, a jawless fre