NCSA and Center for AI Innovation affiliate, Rhanor Gillette, helps answer the question of which came first, movement or legs.
This new study finds parallels between the brain architecture that drives locomotion in sea slugs and that of more complex segmented creatures. It suggests that brain circuits for locomotion evolved long before appendages and skeletons.
Read more here: https://news.illinois.edu/view/6367/1996912036