Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Unikonta |
| system | Opisthokonta Cavalier-Smith, 1987 |
| kingdom | Animalia Linnaeus, 1758 - animals |
| subregnum | Eumetazoa Butschli, 1910 |
| divisio | Bilateria Hatschek, 1888 |
| subdivisio | Protostomia Grobben, 1908 - protostomes |
| phylum | Acanthocephala - spiny-headed worms |
| class | Archiacanthocephala Meyer, 1931 |
| order | Oligacanthorhynchida |
| family | Oligacanthorhynchidae |
| genus | Oligacanthorhynchus Travassos, 1915 |
| species | Oligacanthorhynchus compressus (Rudolphi, 1802) |
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