Cracking the Enigma of the Tully Monster.

The Tully Monster, an enigmatic fossil organism from the Carboniferous age, has puzzled scientists for over 50 years. While some studies have identified it as a vertebrate, a new micro-CT analysis of 153 fossils by Japanese scientists concludes that it is an invertebrate of unknown affinity. This highlights the difficulty in identifying preserved body structures and attributing them to a specific phylum, raising questions about the confidence placed in such fossil evidence to prove Darwinian evolution or represent "missing links."