I want to know the answer to the following question:
What subtype of clitellates contains earthworms?
All the background I'm provided with is that "In 1997 Greg Rouse and Kristian Fauchald attempted a "first heuristic step in terms of bringing polychaete systematics to an acceptable level of rigour", based on anatomical structures, and divided polychaetes into:". Is that enough to answer the question?
Answer: no