Ancient sea jelly shakes evolutionary tree

A 580-million-year-old fossil is casting doubt on the established tree of animal life. The invertebrate, named Eoandromeda octobrachiata because its body plan resembles the spiral galaxy Andromeda, suggests that the earliest branches in the tree need to be reordered, say the authors of study in Evolution and Development .

http://archaeologynewsnetwork.blogspot.com/2011/09/ancient-sea-jelly-shakes-evolutionary.html