Gastrotricha |
Micrognathozoa |
Rotifera |
Gnathostomulida |
Cycliophora |
Platyhelminthes |
Myzostomida |
Brachiopoda |
Entoprocta |
Bryozoa (Ectoprocta) |
Sipuncula |
Annelida |
Mollusca |
Nemertea |
Nematoda |
Arthropoda |