Noun
A group of Bryozoa in which the anus is within the circle of tentacles. See Pedicellina.
Source: Webster's dictionaryThat 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. Source: Internet
The phylogenetic position of Symbion remains unclear: originally the phyla Ectoprocta and Entoprocta were considered possible relatives of Symbion, based on structural similarities. Source: Internet