segmentation in marine invertebrate

[Doug207]

Heyo

would anyone know of other marine inverts, other than crustaceans and annelid worms, which would show segmentation. Would the chambering of the nautilus shell count by any chance?

Thanks

[Darby]

Some primitive mollusks show hints of segmentation (not nautilus, though). And sea spiders. I've forgotten whether there are any "minor" phyla that fit...