found: Kennedy, C.R. Ecology of the Acanthocephala, 2006:unnum. prelim. p. (Commonly known as spiny-headed worms, acanthocephalans have a characteristic eversible proboscis; Acanthocephalans are endoparasitic found in almost all marine, freshwater and terrestrial systems, infecting a huge range of definitive (usually vertebrate) and intermediate (usually arthropod) hosts during their life cycles) p. vii (Acanthocephala are generally considered to be a small and rather insignificant group of parasites; they are a minor phylum of interest to specialists)
found: ITIS, Jan. 6, 2017(Acanthocephala - valid - spiny-headed worms, thorny-headed worms. Taxonomic rank: Phylum. Superphylum Platyzoa, Infrakingdom Protostomia, Subkingdom Bilateria, Kingdom Animalia)
found: NCBI taxonomy browser, Jan. 6, 2017(Acanthocephala (thorny-headed worms). Rank: phylum. Common names: spiny-headed worms; acanthocephalans. Blast name: thorny-headed worms. Lineage (full): cellular organisms; superkingdom Eukaryota; [no rank] Opisthokonta; kingdom Metazoa; [no rank] Eumetazoa; [no rank] Bilateria; [no rank] Protostomia; [no rank] Lophotrochozoa)
