Between brackets is the number of accepted species
1 Click on "-" to collapse/hide all child taxa
2 Shows the number of accepted species within the taxon
3 The last expanded taxon is highlighted
4 Click on "+" to expand/show all child taxa
5 Click to see the taxon details page
- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Class Anopla accepted as Nemertea
- Class Arhynchocoela
- Class Enopla accepted as Nemertea
- Order Bdellonemertea
- Order Hoplonemertea
- Family Acteonemertidae Chernyshev, 2005
- Family Amphiporidae Oersted, 1844
- Genus Aegialonemertes Gibson, 1990
- Genus Alaonemertes Stiasny-Wijnhoff, 1942
- Genus Alaxinus Gibson, Wickham & Kuris, 1990
- Genus Amphiparus Wagner, 1885 accepted as Amphiporus Ehrenberg, 1831
- Genus Amphiporella Friedrich, 1939 accepted as Germanemertes Kajihara, 2021
- Genus Amphiporus Ehrenberg, 1831
- Genus Arctonemertes Friedrich, 1957
- Genus Chasmocephala Matzdorff, 1893 accepted as Cosmocephala Stimpson, 1857
- Species Chasmocephala cordiceps Matzdorff, 1893 accepted as Amphiporus cordiceps (Jensen, 1878)
- Genus Chlamydocephalus Diesing, 1850 accepted as Amphiporus Ehrenberg, 1831
- Genus Communoporus Friedrich, 1955
- Genus Correanemertes Kirsteuer, 1967
- Genus Cosmocephala Stimpson, 1857 accepted as Amphiporus Ehrenberg, 1831
- Genus Crybellonemertes
- Genus Crybelonemertes Sundberg & Gibson, 1995
- Genus Dananemertes Friedrich, 1957
- Genus Diopsonemertes Kajihara, Gibson & Mawatari, 2001
- Genus Ditactorrhochma Diesing, 1862
- Genus Duosnemertes Friedrich, 1955
- Genus Furugelmina Chernyshev, 1998
- Genus Germanemertes Kajihara, 2021
- Genus Gurjanovella Uschakov, 1926
- Genus Hallezia Girard, 1893
- Genus Intestinonemertes Friedrich, 1957
- Genus Nareda Girard in Stimpson, 1854
- Genus Naredopsis Verrill, 1892
- Genus Neesia Girard, 1893
- Genus Nemertovema Chernyshev & Polyakova, 2018
- Genus Noteonemertes Gibson, 2002
- Genus Omatoplea Diesing, 1850
- Genus Ommatoplea Ehrenberg, 1831
- Genus Paramphiporus Kirsteuer, 1965 accepted as Diplomma Stimpson, 1857
- Genus Parischyronemertes Gibson, 2002
- Genus Pheroneonemertes Gibson, 1990
- Genus Polinia Verrill, 1873 accepted as Polina Stimpson, 1857
- Genus Poseidonemertes Kirsteuer, 1967
- Genus Proamphiporus Chernyshev & Polyakova, 2019
- Genus Proneurotes Montgomery, 1897
- Genus Psammamphiporus Gibson, 1989
- Genus Tagonemertes Corrêa, 1957 accepted as Amphiporus Ehrenberg, 1831
- Genus Thallassionemertes Gibson & Sundberg, 2001
- Genus Valdivianemertes Grube, 1840
- Genus Vulcanonemerter accepted as Vulcanonemertes Gibson & Strand, 2002
- Genus Vulcanonemertes Gibson & Strand, 2002
- Genus Zygonemertes Burger, 1895
- Genus Zygonemertes Montgomery, 1897
- Family Armaueriidae
- Family Balaenanemertidae
- Family Brinkmanniidae
- Family Buergeriellidae
- Family Carcinonemertidae Coe, 1902
- Family Chuniellidae
- Family Cinclidonemertidae Crandall, 2010
- Family Coellidae Stiasny-Wijnhoff, 1936
- Family Cratenemertidae Friedrich, 1968
- Family Dinonemertidae
- Family Drepanobandidae
- Family Drepanogigantidae
- Family Drepanophorellidae
- Family Drepanophoridae
- Family Drepanophoringiidae Stiasny-Wijnhoff, 1936
- Family Emplectonematidae
- Family Nectonemertidae
- Family Ototyphlonemertidae
- Family Pachynemertidae
- Family Paradrepanophoridae
- Family Pelagonemertidae
- Family Phallonemertidae
- Family Planktonemertidae
- Family Plectonemertidae
- Family Prosorhochmidae
- Family Protopelagonemertidae
- Family Siboganemertidae
- Family Tetrastemmatidae
- Family Uniporidae
- Order Hoplonemertini
- Order Polystilifera
- Class Nemertea (awaiting allocation)
- Class Nemertea incertae sedis
- Class Nemertina (awaiting allocation) accepted as Nemertea (awaiting allocation)
- Class Palaeonemertea
- Class Pilidiophora
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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