Ancient Mom: Oldest Brood of Preserved Embryos Found

A tiny, shrimplike creature that lived 508 million years ago has been discovered carrying about two-dozen fossilized eggs with preserved embryos in its body, making it the earliest example of brood care with preserved embryos on record, a new study finds. Recently, paleontologists revisited the W. fieldensis fossils, looking at 979 specimens from the Royal Ontario Museum in Canada and 866 specimens housed at the Smithsonian Institution National Museum of Natural History in Washington, D.C. After