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 - bilaterians |
| subdivisio | Deuterostomia - deuterostomes |
| phylum | Chordata Bateson, 1885 - chordates |
| subphylum | Vertebrata Cuvier, 1812 - vertebrates |
| infraphylum | Cyclostomata Busk, 1852 |
| class | Cephalaspidomorphi - lampreys and jawless fish |
| subclass | Petromyzontida |
| order | Petromyzontiformes |
| family | Petromyzontidae Bonaparte, 1831 - lampreys |
| genus | Lampetra Bonnaterre, 1788 |
| species | Lampetra richardsoni Vladykov & Follett, 1965 - Western Brook Lamprey |
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