Did Human Limbs Evolve From Fish Gills?
Scientists have shown that human limbs may have evolved from the same gene structures found in the gills of cartilaginous fish such as sharks, skates and rays. Victorian era German anatomist Karl Gegenbaur proposed the idea a century ago but no fossil evidence came to light to back his claim. The Daily Mail reports: The discovery could shed light on the origin of jawed vertebrates – the group of animals that includes humans. Unlike other fish, cartilaginous fish have a series of skin flaps that protect their gills.