Which squid/octopus is believed to be the missing link between squid and octopus?

zbeckabee

Pre-ceph Cambrian Thing-a-ma-bob (orthozanclus): Even though this fossil is relatively new, it's been classified as being part of a large group of animals that includes snails, earthworms, and mollusks. It could be a "missing link" to the evolution of cuttlefish, squids, and octopus. The ancestors of the multi-tentacled sea creatures include ammonites, which sported heavy shells on the outside of their bodies, originally straight, but near their evolutionary zenith began to form in curls, as can be seen in the only living example of the animals still with us today, the nautilus. Ammonites died out at the end of the Cretaceous along with the dinosaurs. See Page 2: http://www.associatedcontent.com/article/166059/fossil_find_may_be_one_of_oldest_ever.html?cat=15 http://en.wikipedia.org/wiki/Orthozanclus Dec 18 08, 7:13 AM