Sponges may be ancient, but their timeline has been murky. New research suggests the earliest sponges were soft and skeleton-free, explaining why their fossils don’t appear until much later. By ...
Scientists at MIT have found compelling chemical evidence that Earth’s earliest animals were likely ancient sea sponges. Hidden inside rocks over 541 million years old are rare molecular “fingerprints ...
Chemical signatures in ancient rocks point to precursors of squishy sea creatures. After studying rocks more than 541 million years old, MIT scientists have found new evidence that some of Earth’s ...
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