The Kryptotrochozoa (incl. Entoprocta + Ectoprocta) are a proposed Lophotrochozoa clade. It consists of the Nemertea and Lophophorata. It is controversial.
12Giribet G, Dunn CW, Edgecombe GD, Hejnol A, Martindale MQ, Rouse GW. "Assembling the spiralian tree of life". In Telford MJ, Littlewood DT (eds.). Animal Evolution — Genomes, Fossils, and Trees. pp.52–64.