About 500 million years ago, a squishy, thumb-size sea creature did a little dance — waving its upper limbs around in the ocean in a never-ending attempt to ensnarl some tasty morsels floating by. Researchers found the remains of this newly identified critter in the Burgess Shale deposit, a world-famous area in the Canadian Rockies that's brimming with animal fossils from the Cambrian Period (540 million to 490 million years ago). "The Burgess Shale is certainly no stranger of already bizarre-looking creatures, but this new species is certainly one of the oddest," said study lead researcher Jean-Bernard Caron, the senior curator of invertebrate paleontology at the Royal Ontario Museum in Canada.
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