Actinia Linnaeus, 1767 (additional source)
Aglaophenia Lamouroux, 1812 (additional source)
Campanularia brachycaulis Stechow, 1919 accepted as Clytia hemisphaerica (Linnaeus, 1767) (source of synonymy)
Campanularia compressa Clark, 1877 accepted as Orthopyxis compressa (Clark, 1877) (source of synonymy)
Dynamena Lamouroux, 1812 (additional source)
Eudendrium ramosum Van Beneden, 1844 accepted as Bougainvillia muscus (Allman, 1863) (basis of record)
Garveia nutans Wright, 1859 (additional source)
Gonothyraea hyalina Hincks, 1866 accepted as Gonothyraea loveni (Allman, 1859) (basis of record)
Gonothyraea hyalina Hincks, 1866 accepted as Gonothyraea loveni (Allman, 1859) (source of synonymy)
Halecium Oken, 1815 (additional source)
Halecium schneideri Bonnevie, 1898 accepted as Halecium pusillum (Sars, 1857) (source of synonymy)
Hydrallmania Hincks, 1868 (additional source)
Hydrichthys cyclothonis Damas, 1934 (additional source)
Kirchenpaueria pinnata (Linnaeus, 1758) (additional source)
Limulidae Leach, 1819 (basis of record)
Limulus O.F. Müller, 1785 (basis of record)
Limulus polyphemus (Linnaeus, 1758) (basis of record)
Merostomata (basis of record)
Nemertesia antennina (Linnaeus, 1758) (additional source)
Nemertesia ramosa (Lamarck, 1816) (additional source)
Nymphon brevitarse Krøyer, 1844 (additional source)
Nymphon elegans Hansen, 1887 (additional source)
Nymphon gracilipes Miers, 1875 (basis of record)
Nymphon grossipes (Fabricius, 1780) (additional source)
Nymphon hirtipes Bell, 1855 (additional source)
Nymphon leptocheles Sars, 1888 (additional source)
Nymphon longimanum Sars, 1888 (additional source)
Nymphon longitarse Krøyer, 1844 (additional source)
Nymphon macronyx Sars, 1877 (additional source)
Nymphon macrum Wilson, 1880 (basis of record)
Nymphon megalops Sars, 1877 (additional source)
Nymphon microrhynchum G.O. Sars, 1888 (additional source)
Nymphon serratum G. O. Sars, 1879 (additional source)
Nymphon sluiteri Hoek, 1901 (additional source)
Nymphon spinosissimum (Norman, 1894) accepted as Nymphon tenellum (Sars, 1888) (additional source)
Nymphon stroemi Krøyer, 1844 (additional source)
Nymphon tenellum (Sars, 1888) (additional source)
Nymphonidae Wilson, 1878 (basis of record)
Obelia bicuspidata Clark, 1875 accepted as Obelia bidentata Clark, 1875 (basis of record)
Obelia bicuspidata Clark, 1875 accepted as Obelia bidentata Clark, 1875 (source of synonymy)
Obelia bidentata Clark, 1875 (additional source)
Opercularella lacerata (Johnston, 1847) (additional source)
Pandea Lesson, 1843 (additional source)
Plumularia Lamarck, 1816 (additional source)
Podocoryna M. Sars, 1846 (additional source)
Podocoryna areolata (Alder, 1862) (additional source)
Schizotricha frutescens (Ellis & Solander, 1786) (additional source)
Selaginopsis Allman, 1876 accepted as Thuiaria Fleming, 1828 (additional source)
Sertularella Gray, 1848 (additional source)
Sertularella gayi (Lamouroux, 1821) (additional source)
Sertularia argentea Linnaeus, 1758 (additional source)
Sertularia distans (Lamouroux, 1816) accepted as Amphisbetia distans (Lamouroux, 1816) (additional source)
Symplectoscyphus Marktanner-Turneretscher, 1890 (additional source)
Tamarisca Kudelin, 1914 (additional source)
Thecocarpus Nutting, 1900 accepted as Lytocarpia Kirchenpauer, 1872 (basis of record)
Thecocarpus Nutting, 1900 accepted as Lytocarpia Kirchenpauer, 1872 (source of synonymy)
Thecocarpus myriophyllum (Linnaeus, 1758) accepted as Lytocarpia myriophyllum (Linnaeus, 1758) (source of synonymy)
Thuiaria Fleming, 1828 (additional source)
Thuiaria thuja (Linnaeus, 1758) (additional source)
Tridentata Stechow, 1920 (basis of record)
Xiphosurida (basis of record)
Zanclea costata Gegenbaur, 1857 (additional source)

English squirrel's tail for Sertularia argentea Linnaeus, 1758