Examples include mollusks, annelid worms, and the entoprocta.

Some authors use Entoprocta, while others prefer Kamptozoa.

In addition, Priapulida, Entoprocta, and Tardigrada are sometimes included.

The more recently discovered group were given the name Entoprocta, while the original "Bryozoa" were called "Ectoprocta".

Nevertheless some notable scientists have continued to regard the "Ectoprocta" and Entoprocta as close relatives and group them under "Bryozoa".

The Lophophorata include the Bryozoa, Entoprocta, Phoronida, and Brachiopoda.

Other phyla include Acoelomorpha, Brachiopoda, Bryozoa, Entoprocta, Phoronida, and Xenoturbellida.

The lophophore is the characteristic feeding organ of four major groups of animals: the Brachiopoda, Bryozoa, Entoprocta, and Phoronida.

They include the Brachiopoda or lamp shells, which are prominent in the fossil record, the Entoprocta, the Phoronida, and possibly the Bryozoa or moss animals.

The phylogenetic position of Symbion remains unclear: originally the phyla Ectoprocta and Entoprocta were considered possible relatives of Symbion, based on structural similarities.

However studies by one team in 2007 and 2008 argues for sinking Entoprocta into Bryozoa as a class, and resurrecting Ectoprocta as a name for the currently identified bryozoans.

That implies that the Entoprocta are not monophyletic, as the Phoronida are a sub-group of ectoprocts but the standard definition of Entoprocta excludes the Phoronida.