Scientists have discovered that an ancient tulip-shaped marine animal was the ancestor to a group of animals known as the entoprocta. The fossils date back 520 million years, around the Cambrian period, and are the oldest record of entoprocta ancestors so far. Although studies of the fossils have been conducted before, researchers at Northwest University in Xi'an, China, took a deeper look at the physical and behavioral qualities of the animals after hundreds of new specimens were discovered.

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