Minnow-sized creature had something akin to one 500M years ago
(Newser) -
Introducing Metaspriggina, a minnow-sized fish that lived about 500 million years ago and appears to occupy a crucial branch of your family tree. Scientists say the creature might just be the ancestor of nearly all vertebrates, reports LiveScience . The revelation comes after study of dozens of remarkably well-preserved Metaspriggina fossils...