It's believed the sea urchin survived a snack attack by an aquatic lizard An amateur paleontologist has discovered a rare 66-million-year-old sea urchin on a beach in Denmark. Peter Bennicke ...

What is a sea urchin, if not an "underwater hedgehog"? Most of what we know about the deep history of echinoderms from British fossils comes from the few specimens that emerged from railway ...