A pair of researchers, one with the University of Cambridge, the other the Royal Ontario Museum, has found a clue that might help place Typhloesus wellsi, nicknamed the "alien goldfish," on the tree of life. In their paper published in the journal Biology Letters, Simon Conway Morris and Jean-Bernard Caron, describe their study of several samples of a 330-million-year-old fossil and what they discovered about the mysterious ancient sea creature.
