Evolutionary Transition

The fossils were found in a tangle in the 365-million-year-old Greenland rock: 20 sets of floppy limbs and fish tails thrown together by an ancient catastrophe. Paleontologists said the creatures, called Acanthostegas, were swept out of their underwater homes by a flood, then perished in a subsequent drought - though they had legs, the animals hadn...

The fossils were found in a tangle in the 365-million-year-old Greenland rock: 20 sets of floppy limbs and fish tails thrown together by an ancient catastrophe. Paleontologists said the creatures, called Acanthostegas, were swept out of their underwater homes by a flood, then perished in a subsequent drought - though they had legs, the animals hadn...