A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs ...

Along with kaiju like Mechagodzilla and King Ghidorah, Mothra is one of the most famous and powerful monsters in the "Godzilla" franchise, so it was a big deal when she made her MonsterVerse debut ...

From the fossils, paleontologists believe that Mosura fentoni had three eyes, spiny jointed claws, a circular mouth lined with teeth, and a body equipped with swimming flaps along its sides.