What happens when cleavage patterns evolve? Some insights from bryozoan embryonic development: https://bmcbiol.biomedcentral.com/articles/10.1186/s12915-017-0371-9
Paper! How are segment polarity genes expressed in an animal without segments? https://www.nature.com/articles/srep32387
Our paper on the unique development of a ribbon worm and the evolution of larval forms: https://evodevojournal.biomedcentral.com/articles/10.1186/s13227-015-0023-5
See more about Lineus ruber.