found: Rychel, A.L. Looking for the deuterostome ancestor : hemichordate phylogeny, cartilage development, and regeneration, 2008:abstr. (hemichordates; hemichordate worms)
found: Wikipedia, Apr. 9, 2009(Hemichordata is a phylum of worm-shaped marine deuterostome animals, generally considered the sister group of the echinoderms; Hemichordates)
found: Swalla, B.J. Molecular analysis of the evolution and development of the chordates, via WWW, Apr. 18, 2011(hemichordates, marine worms that are related to the better known echinoderms; hemichordate worms)
found: The Phylum Hemichordata, via The myriad worlds of invertebrates WWW site, Apr. 18, 2011(They are all marine worm-like animals. There are only about 90 known species all of which are benthic (living on the sea floor) in their adult form)
found: ITIS, Jan. 6, 2017(Hemichordata. Taxonomic rank: phylum. Synonyms: Planctosphaeroidea Spengel, 1932; Stomochordata; Planctosphaera Spengel, 1932; Planctosphaera pelagica Spengel, 1932. Common name: hemichordates. Infrakingdom Deuterostomia, Subkingdom Bilateria, Kingdom Animalia)
found: NCBI taxonomy browser, Jan. 6, 2017(Hemichordata (hemichordates). Rank: phylum. Lineage: cellular organisms; superkingdom Eukaryota; [no rank] Opisthokonta; kingdom Metazoa; [no rank] Eumetazoa; [no rank] Bilateria; [no rank] Deuterostomia)
