May 11 (UPI) -- Paleontologists have recovered a Jurassic fossil tail they believe is the missing link between two halves of the ancient crocodile family.
During the Jurassic period, from roughly 200 to 145 million years ago, ancient crocodiles took two basic forms, each featuring several species. One group featured dino-like armor and had limbs for walking on land. Another had tail fins and flippers, but not armor.