Not sure but I did find a book called "Identifying Marine Diatoms and Dinoflagellates" by Grethe R. Hasle. I will try to see if that book has any mention of these diatom types:Wow that is cool. Green and all lined up. I don't see green diatoms very much. Are they stealing chloroplasts?
amazon.com/Identifying-Marine-Diatoms-Dinoflagellates-Grethe/dp/0126930155