Scientists believe they may have identified the first animal to have roamed the Earth about 700 million years ago, a new study published in Nature revealed. Researchers determined that the first ...

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Comb jellies are these beautiful, otherworldly creatures that sparkle gently in the sea. And now, if a study in the journal Science and another one in the journal Nature hold up, they may not be so ...

A 580-million-year-old fossil suggests that evolution of bilateral symmetry may be simpler than previously thought, Nature reports. The fossil, an eight-armed swirl named Eoandromeda after the galaxy ...