Le Spugne di Mare potrebbero aver colonizzato il pianeta 100 milioni di anni prima dei loro pronipoti Cambriani - via @MIT

"New genetic analyses led by MIT researchers confirm that sea sponges are the source of a curious molecule found in rocks that are 640 million years old. These rocks significantly predate the Cambrian explosion — the period in which most animal groups took over the planet, 540 million years ago — suggesting that sea sponges may have been the first animals to inhabit the Earth. (Learn more: http://mitsha.re/YCNZq)"