Amphioxus...yuck

This gross-looking little thing is called Amphioxus, or more commonly a lancelet. It is a marine critter from the phylum Chordata. Although it is an invertebrate, evidence shows that it is a close relative of the vertebrates. They are found abundantly in warmer coastal waters. Recently, fossils have been found that suggest they were around 525 million years ago. Now, I am not so sure I believe that...