Empty seashells became the ocean’s first ready-made homes 470 million years ago, helping create an entirely new ecosystem
Empty seashells became new habitats 470 million years ago An international study led by scientists at the University of Tartu shows that about 470 million years ago, a major ecological change took place in the world’s oceans. For the first time, the hollow interiors of empty mollusc shells began serving as homes for small sea…
