Tyler, S.; Schilling, S. (2011). Phylum Xenacoelomorpha Philippe, et al., 2011. In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and
survey of taxonomic richness. Zootaxa. 3148: 24-25.
Phylum Xenacoelomorpha Philippe, et al., 2011. In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and
survey of taxonomic richness