Antygomonas Nebelsick, 1990 (basis of record)
Antygomonas incomitata Nebelsick, 1990 (basis of record)
Antygomonidae Adrianov & Malakhov, 1994 accepted as Semnoderidae Remane, 1929 (basis of record)
Campyloderes Zelinka, 1907 (basis of record)
Campyloderes adherens Nyholm, 1947 accepted as Centroderes spinosus (Reinhard, 1881) (basis of record)
Campyloderes macquariae Johnston, 1938 (basis of record)
Centroderes Zelinka, 1907 (basis of record)
Centroderes eisigii Zelinka, 1928 accepted as Centroderes spinosus (Reinhard, 1881) (basis of record)
Centroderes spinosus (Reinhard, 1881) (basis of record)
Centroderidae Zelinka, 1896 (basis of record)
Cephalorhyncha (basis of record)
Chaetostephanidae Salvini-Plawen, 1974 (basis of record)
Condyloderes Higgins, 1969 (basis of record)
Condyloderes multispinosus (McIntyre, 1962) Higgins, 1969 (basis of record)
Cyclorhagida (basis of record)
Echinoderes Claparède, 1863 (basis of record)
Echinoderes agigens Bacescu, 1968 (basis of record)
Echinoderes angustus Higgins & Kristensen, 1988 (basis of record)
Echinoderes aquilonius Higgins & Kristensen, 1988 (basis of record)
Echinoderes arlis Higgins, 1966 (basis of record)
Echinoderes cantabricus Pardos, Higgins & Benito, 1998 (basis of record)
Echinoderes capitatus (Zelinka, 1912) (basis of record)
Echinoderes citrinus Zelinka, 1928 (basis of record)
Echinoderes druxi d'Hondt, 1972-1973 (basis of record)
Echinoderes dujardinii Claparède, 1863 (basis of record)
Echinoderes elongatus (Nyholm, 1947) (basis of record)
Echinoderes eximus Higgins & Kristensen, 1988 (basis of record)
Echinoderes ferrugineus Zelinka, 1928 (basis of record)
Echinoderes gerardi Higgins, 1978 (basis of record)
Echinoderes higginsi Huys & Coomans, 1989 (basis of record)
Echinoderes hispanicus Pardos, Higgins & Benito, 1998 (basis of record)
Echinoderes krishnaswamyi Higgins, 1985 (basis of record)
Echinoderes kristenseni Higgins, 1985 (basis of record)
Echinoderes levanderi Karling, 1954 (basis of record)
Echinoderes peterseni Higgins & Kristensen, 1988 (basis of record)
Echinoderes riedli Higgins, 1966 (basis of record)
Echinoderes setiger Greeff, 1869 (basis of record)
Echinoderes tubilak Higgins & Kristensen, 1988 accepted as Echinoderes remanei (Blake, 1930) (basis of record)
Echinoderidae Carus, 1885 (basis of record)
Halicryptus von Siebold, 1849 (basis of record)
Halicryptus spinulosus von Siebold, 1849 (basis of record)
Homalorhagida accepted as Allomalorhagida (basis of record)
Kinorhyncha (basis of record)
Kinorhynchus Sheremetevskij, 1974 (basis of record)
Kinorhynchus giganteus (Zelinka, 1908) Sheremetevskij, 1974 accepted as Pycnophyes giganteus (Zelinka, 1908) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Kinorhynchus paraneapolitanus Sheremetevskij, 1974 accepted as Pycnophyes paraneapolitanus (Sheremetevskij, 1974) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Loricifera (additional source)
Maccabeus Por, 1973 (basis of record)
Maccabeus tentaculatus Por, 1973 (basis of record)
Nanaloricida (basis of record)
Nanaloricidae Kristensen, 1983 (basis of record)
Nanaloricus Kristensen, 1983 (basis of record)
Nanaloricus khaitatus Todaro & Kristensen, 1998 (basis of record)
Nanaloricus mysticus Kristensen, 1983 (basis of record)
Nectonema Verrill, 1879 (basis of record)
Nectonema agile Verrill, 1879 (basis of record)
Nectonema munidae Brinkmann, 1930 (basis of record)
Nectonema svensksundi Bock, 1913 (basis of record)
Nectonematida (basis of record)
Nectonematidae Ward, 1892 (basis of record)
Nematomorpha (basis of record)
Neocentrophyidae Higgins, 1969 (basis of record)
Paracentrophyes Higgins, 1983 (basis of record)
Paracentrophyes quadridentatus (Zelinka, 1928) (basis of record)
Priapulida (basis of record)
Priapulidae Gosse, 1855 (basis of record)
Priapulopsis Koren & Danielssen, 1875 (basis of record)
Priapulopsis bicaudatus (Danielssen, 1869) (basis of record)
Priapulopsis cnidephorus Salvini-Plawen, 1973 (basis of record)
Priapulus Lamarck, 1816 (basis of record)
Priapulus abyssorum Menzies, 1959 (basis of record)
Priapulus caudatus Lamarck, 1816 (basis of record)
Pycnophyes Zelinka, 1907 (basis of record)
Pycnophyes calmani Zelinka, 1928 accepted as Pycnophyes communis Zelinka, 1908 (basis of record)
Pycnophyes carinatus Zelinka, 1912 accepted as Cristaphyes carinatus (Zelinka, 1912) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes communis Zelinka, 1908 (basis of record)
Pycnophyes cryopygus Higgins & Kristensen, 1988 accepted as Cristaphyes cryopygus (Higgins & Kristensen, 1988) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes dentatus (Reinhard, 1881) accepted as Setaphyes dentatus (Reinhard, 1881) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes flaveolatus Zelinka, 1908 accepted as Setaphyes flaveolatus (Zelinka, 1908) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes greenlandicus Higgins & Kristensen, 1988 accepted as Krakenella greenlandica (Higgins & Kristensen, 1988) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes kielensis Zelinka, 1928 accepted as Setaphyes kielensis (Zelinka, 1928) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes maximus Reimer, 1963 accepted as Krakenella maxima (Reimer, 1963) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes mokievskii Adrianov, 1995 accepted as Krakenella mokievskii (Adrianov, 1995) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes ponticus (Reinhard, 1881) accepted as Fujuriphyes ponticus (Reinhard, 1881) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes robustus Zelinka, 1928 (basis of record)
Pycnophyes rugosus Zelinka, 1928 accepted as Fujuriphyes rugosus (Zelinka, 1928) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes spitsbergensis Adrianov, 1995 accepted as Krakenella spitsbergensis (Adrianov, 1995) Sánchez, Yamasaki, Pardos, Sørensen & Martínez, 2016 (basis of record)
Pycnophyes zelinkaei Southern, 1914 (basis of record)
Pycnophyidae Zelinka, 1896 (basis of record)
Semnoderes Zelinka, 1907 (basis of record)
Semnoderes armiger Zelinka, 1928 (basis of record)
Semnoderes ponticus Bacescu & Bacescu, 1956 (basis of record)
Semnoderidae Remane, 1929 (basis of record)
Tubiluchidae van der Land, 1970 (basis of record)
Tubiluchus van der Land, 1968 (basis of record)
Tubiluchus arcticus Adrianov, Malakhov, Tchesunov & Tzetlin, 1989 (basis of record)
Zelinkaderes Higgins, 1990 (basis of record)
Zelinkaderes submersus (Gerlach, 1969) (basis of record)
Zelinkaderidae Higgins, 1990 (basis of record)

Arctic Ocean for Echinoderes angustus Higgins & Kristensen, 1988 
Arctic Ocean for Echinoderes aquilonius Higgins & Kristensen, 1988 
Arctic Ocean for Echinoderes peterseni Higgins & Kristensen, 1988 
Arctic Ocean for Echinoderes tubilak Higgins & Kristensen, 1988 
Arctic Ocean for Halicryptus spinulosus von Siebold, 1849 
Arctic Ocean for Nectonema svensksundi Bock, 1913 
Arctic Ocean for Priapulopsis bicaudatus (Danielssen, 1869) 
Arctic Ocean for Priapulus caudatus Lamarck, 1816 
Arctic Ocean for Tubiluchus arcticus Adrianov, Malakhov, Tchesunov & Tzetlin, 1989 
Baltic sea for Echinoderes elongatus (Nyholm, 1947)  (inaccurate)
Baltic sea for Echinoderes levanderi Karling, 1954 
Baltic sea for Pycnophyes communis Zelinka, 1908 
Baltic sea for Pycnophyes maximus Reimer, 1963 
Black Sea for Echinoderes agigens Bacescu, 1968 
Black Sea for Kinorhynchus paraneapolitanus Sheremetevskij, 1974 
Black Sea for Nectonema agile Verrill, 1879 
Black Sea for Pycnophyes dentatus (Reinhard, 1881) 
Black Sea for Pycnophyes kielensis Zelinka, 1928 
Black Sea for Pycnophyes ponticus (Reinhard, 1881) 
Black Sea for Semnoderes ponticus Bacescu & Bacescu, 1956 
European waters (ERMS scope) for Campyloderes adherens Nyholm, 1947 
European waters (ERMS scope) for Campyloderes macquariae Johnston, 1938 
European waters (ERMS scope) for Centroderes spinosus (Reinhard, 1881) 
European waters (ERMS scope) for Condyloderes multispinosus (McIntyre, 1962) Higgins, 1969  (inaccurate)
European waters (ERMS scope) for Echinoderes agigens Bacescu, 1968 
European waters (ERMS scope) for Echinoderes angustus Higgins & Kristensen, 1988 
European waters (ERMS scope) for Echinoderes aquilonius Higgins & Kristensen, 1988 
European waters (ERMS scope) for Echinoderes cantabricus Pardos, Higgins & Benito, 1998 
European waters (ERMS scope) for Echinoderes capitatus (Zelinka, 1912) 
European waters (ERMS scope) for Echinoderes citrinus Zelinka, 1928 
European waters (ERMS scope) for Echinoderes druxi d'Hondt, 1972-1973  (doubtful)
European waters (ERMS scope) for Echinoderes dujardinii Claparède, 1863 
European waters (ERMS scope) for Echinoderes elongatus (Nyholm, 1947) 
European waters (ERMS scope) for Echinoderes ferrugineus Zelinka, 1928 
European waters (ERMS scope) for Echinoderes gerardi Higgins, 1978 
European waters (ERMS scope) for Echinoderes higginsi Huys & Coomans, 1989 
European waters (ERMS scope) for Echinoderes hispanicus Pardos, Higgins & Benito, 1998 
European waters (ERMS scope) for Echinoderes krishnaswamyi Higgins, 1985 
European waters (ERMS scope) for Echinoderes kristenseni Higgins, 1985 
European waters (ERMS scope) for Echinoderes levanderi Karling, 1954 
European waters (ERMS scope) for Echinoderes peterseni Higgins & Kristensen, 1988 
European waters (ERMS scope) for Echinoderes riedli Higgins, 1966 
European waters (ERMS scope) for Echinoderes setiger Greeff, 1869 
European waters (ERMS scope) for Echinoderes tubilak Higgins & Kristensen, 1988 
European waters (ERMS scope) for Echinoderes worthingii Zelinka, 1928 
European waters (ERMS scope) for Halicryptus spinulosus von Siebold, 1849 
European waters (ERMS scope) for Kinorhynchus giganteus (Zelinka, 1908) Sheremetevskij, 1974 
European waters (ERMS scope) for Kinorhynchus paraneapolitanus Sheremetevskij, 1974 
European waters (ERMS scope) for Maccabeus tentaculatus Por, 1973 
European waters (ERMS scope) for Nanaloricus khaitatus Todaro & Kristensen, 1998 
European waters (ERMS scope) for Nanaloricus mysticus Kristensen, 1983 
European waters (ERMS scope) for Nectonema agile Verrill, 1879 
European waters (ERMS scope) for Nectonema munidae Brinkmann, 1930 
European waters (ERMS scope) for Nectonema svensksundi Bock, 1913 
European waters (ERMS scope) for Paracentrophyes quadridentatus (Zelinka, 1928) 
European waters (ERMS scope) for Priapulopsis bicaudatus (Danielssen, 1869) 
European waters (ERMS scope) for Priapulopsis cnidephorus Salvini-Plawen, 1973 
European waters (ERMS scope) for Priapulus abyssorum Menzies, 1959 
European waters (ERMS scope) for Priapulus caudatus Lamarck, 1816 
European waters (ERMS scope) for Pycnophyes calmani Zelinka, 1928 
European waters (ERMS scope) for Pycnophyes carinatus Zelinka, 1912 
European waters (ERMS scope) for Pycnophyes communis Zelinka, 1908 
European waters (ERMS scope) for Pycnophyes dentatus (Reinhard, 1881) 
European waters (ERMS scope) for Pycnophyes flaveolatus Zelinka, 1908 
European waters (ERMS scope) for Pycnophyes kielensis Zelinka, 1928 
European waters (ERMS scope) for Pycnophyes maximus Reimer, 1963 
European waters (ERMS scope) for Pycnophyes ponticus (Reinhard, 1881) 
European waters (ERMS scope) for Pycnophyes robustus Zelinka, 1928 
European waters (ERMS scope) for Pycnophyes rugosus Zelinka, 1928 
European waters (ERMS scope) for Pycnophyes zelinkaei Southern, 1914 
European waters (ERMS scope) for Semnoderes armiger Zelinka, 1928 
European waters (ERMS scope) for Semnoderes ponticus Bacescu & Bacescu, 1956 
European waters (ERMS scope) for Tubiluchus arcticus Adrianov, Malakhov, Tchesunov & Tzetlin, 1989 
European waters (ERMS scope) for Zelinkaderes submersus (Gerlach, 1969) 
Mediterranean Sea for Antygomonas incomitata Nebelsick, 1990 
Mediterranean Sea for Centroderes eisigii Zelinka, 1928  (inaccurate)
Mediterranean Sea for Echinoderes capitatus (Zelinka, 1912) 
Mediterranean Sea for Echinoderes citrinus Zelinka, 1928 
Mediterranean Sea for Echinoderes druxi d'Hondt, 1972-1973 
Mediterranean Sea for Echinoderes ferrugineus Zelinka, 1928 
Mediterranean Sea for Echinoderes gerardi Higgins, 1978 
Mediterranean Sea for Echinoderes riedli Higgins, 1966 
Mediterranean Sea for Kinorhynchus giganteus (Zelinka, 1908) Sheremetevskij, 1974 
Mediterranean Sea for Nanaloricus khaitatus Todaro & Kristensen, 1998 
Mediterranean Sea for Nectonema agile Verrill, 1879 
Mediterranean Sea for Priapulopsis cnidephorus Salvini-Plawen, 1973 
Mediterranean Sea for Pycnophyes carinatus Zelinka, 1912 
Mediterranean Sea for Pycnophyes communis Zelinka, 1908 
Mediterranean Sea for Pycnophyes flaveolatus Zelinka, 1908 
Mediterranean Sea for Pycnophyes ponticus (Reinhard, 1881) 
Mediterranean Sea for Pycnophyes robustus Zelinka, 1928 
Mediterranean Sea for Pycnophyes rugosus Zelinka, 1928 
Mediterranean Sea for Semnoderes armiger Zelinka, 1928 
North Sea for Echinoderes higginsi Huys & Coomans, 1989 
North Sea for Echinoderes setiger Greeff, 1869 
North Sea for Pycnophyes dentatus (Reinhard, 1881) 
North Sea for Pycnophyes kielensis Zelinka, 1928 
North Sea for Semnoderes armiger Zelinka, 1928 
Skagerrak for Pycnophyes flaveolatus Zelinka, 1908 
White Sea for Tubiluchus arcticus Adrianov, Malakhov, Tchesunov & Tzetlin, 1989 

 Distribution

 for Campyloderes adherens Nyholm, 1947

E North Atlantic [details]

 Distribution

 for Centroderes eisigii Zelinka, 1928

Mediterranean [details]

 Distribution

 for Maccabeus tentaculatus Por, 1973

Mediterranean [details]

 Distribution

 for Paracentrophyes quadridentatus (Zelinka, 1928)

Mediterranean, Baltic Sea? [details]

 Habitat

 for Halicryptus spinulosus von Siebold, 1849

coastal to slope, also brackish & hypersaline [details]

 Habitat

 for Priapulopsis bicaudatus (Danielssen, 1869)

shelf to deep sea [details]

 Habitat

 for Priapulus abyssorum Menzies, 1959

abyssal [details]

 Habitat

 for Priapulus caudatus Lamarck, 1816

coastal to deep sea [details]