A Vietnam Veteran Collected Fossils for 66 Years. One, Mislabeled 'Baby Lamprey,' Made Paleontologists Reconsider How Vertebrates Moved From Water to Land (opens in new tab)

The fossil turned out to be a hatchling of a crocodile-like creature, and it suggests, according to a new study, that early animals did not use metamorphosis to evolve to dwell on land