Gnathifera is a phylum of metazoans.[1]
"Acanthognatha" is a similar grouping, including rotifers, acanthocephalans, gastrotrichs, and gnathostomulids.[2]
Cycloneuralia: Scalidophora (Kinorhyncha, Loricifera, Priapulida) · Nematoida (Nematoda, Nematomorpha)
Platyhelminthes · Gastrotricha