Aglaothamnion hookeri (Dillwyn) Maggs & Hommersand, 1993 accepted as Gaillona hookeri (Dillwyn) Athanasiadis, 2016 (new combination reference)
Ceramium siliquosum (Kützing) Maggs & Hommersand, 1993 (new combination reference)
Pterosiphonia ardreana Maggs & Hommersand, 1993 accepted as Xiphosiphonia ardreana (Maggs & Hommersand) Savoie & G.W.Saunders, 2016 (original description)

Arctic for Membranoptera Stackhouse, 1809 
Arctic for Odonthalia Lyngbye, 1819 
Arctic for Pantoneura Kylin, 1919 
Arctic for Phycodrys Kützing, 1843 
Arctic for Plumaria F.Schmitz, 1896 
Arctic for Rhodomela C.Agardh, 1822 
Black Sea for Antithamnion Nägeli, 1847 
Black Sea for Bornetia Thuret, 1855 
Black Sea for Brongniartella Bory de Saint-Vincent, 1822 
Black Sea for Chondria C.Agardh, 1817 
Black Sea for Halurus Kützing, 1843 
Central Indo-Pacific for Myriogramme Kylin, 1924 
Central Indo-Pacific for Pleonosporium Nägeli, 1862 
Cold Temperate Northwest Atlantic for Membranoptera Stackhouse, 1809 
Cold Temperate Northwest Atlantic for Myriogramme Kylin, 1924 
Cold Temperate Northwest Atlantic for Odonthalia Lyngbye, 1819 
Cold Temperate Northwest Atlantic for Pantoneura Kylin, 1919 
Cold Temperate Northwest Atlantic for Phycodrys Kützing, 1843 
Cold Temperate Northwest Atlantic for Plumaria F.Schmitz, 1896 
Cold Temperate Northwest Atlantic for Rhodomela C.Agardh, 1822 
Cosmopolitan (World Oceans) for Aglaothamnion Feldmann-Mazoyer, 1941 
Cosmopolitan (World Oceans) for Anotrichium Nägeli, 1862 
Cosmopolitan (World Oceans) for Antithamnion Nägeli, 1847 
Cosmopolitan (World Oceans) for Antithamnionella Lyle, 1922 
Cosmopolitan (World Oceans) for Chondria C.Agardh, 1817 
Cosmopolitan (World Oceans) for Cryptopleura Kützing, 1843 
Cosmopolitan (World Oceans) for Hypoglossum Kützing, 1843 
Cosmopolitan (World Oceans) for Polysiphonia Greville, 1823 
Kattegat for Ceramium cimbricum H.E.Petersen, 1924 
Lusitanian for Aglaothamnion Feldmann-Mazoyer, 1941 
Lusitanian for Anotrichium Nägeli, 1862 
Lusitanian for Antithamnion Nägeli, 1847 
Lusitanian for Antithamnionella Lyle, 1922 
Lusitanian for Asterocolax Feldmann & G.Feldmann, 1951 
Lusitanian for Bornetia Thuret, 1855 
Lusitanian for Brongniartella Bory de Saint-Vincent, 1822 
Lusitanian for Chondria C.Agardh, 1817 
Lusitanian for Cryptopleura Kützing, 1843 
Lusitanian for Gonimophyllum Batters, 1892 
Lusitanian for Halurus Kützing, 1843 
Lusitanian for Hypoglossum Kützing, 1843 
Lusitanian for Membranoptera Stackhouse, 1809 
Lusitanian for Monosporus Solier, 1845 
Lusitanian for Myriogramme Kylin, 1924 
Lusitanian for Pantoneura Kylin, 1919 
Lusitanian for Phycodrys Kützing, 1843 
Lusitanian for Pleonosporium Nägeli, 1862 
Lusitanian for Plumaria F.Schmitz, 1896 
Lusitanian for Polysiphonia Greville, 1823 
Lusitanian for Radicilingua Papenfuss, 1956 
Lusitanian for Rhodomela C.Agardh, 1822 
Mediterranean Sea for Aglaothamnion Feldmann-Mazoyer, 1941 
Mediterranean Sea for Anotrichium Nägeli, 1862 
Mediterranean Sea for Antithamnion Nägeli, 1847 
Mediterranean Sea for Antithamnionella Lyle, 1922 
Mediterranean Sea for Bornetia Thuret, 1855 
Mediterranean Sea for Brongniartella Bory de Saint-Vincent, 1822 
Mediterranean Sea for Chondria C.Agardh, 1817 
Mediterranean Sea for Cryptopleura Kützing, 1843 
Mediterranean Sea for Halopithys Kützing, 1843 
Mediterranean Sea for Halurus Kützing, 1843 
Mediterranean Sea for Hypoglossum Kützing, 1843 
Mediterranean Sea for Microcladia Greville, 1830 
Mediterranean Sea for Monosporus Solier, 1845 
Mediterranean Sea for Myriogramme Kylin, 1924 
Mediterranean Sea for Phycodrys Kützing, 1843 
Mediterranean Sea for Pleonosporium Nägeli, 1862 
Mediterranean Sea for Polysiphonia Greville, 1823 
Mediterranean Sea for Radicilingua Papenfuss, 1956 
Northern European Seas for Aglaothamnion Feldmann-Mazoyer, 1941 
Northern European Seas for Anotrichium Nägeli, 1862 
Northern European Seas for Antithamnion Nägeli, 1847 
Northern European Seas for Antithamnionella Lyle, 1922 
Northern European Seas for Asterocolax Feldmann & G.Feldmann, 1951 
Northern European Seas for Bornetia Thuret, 1855 
Northern European Seas for Brongniartella Bory de Saint-Vincent, 1822 
Northern European Seas for Chondria C.Agardh, 1817 
Northern European Seas for Cryptopleura Kützing, 1843 
Northern European Seas for Gonimophyllum Batters, 1892 
Northern European Seas for Halopithys Kützing, 1843 
Northern European Seas for Halurus Kützing, 1843 
Northern European Seas for Hypoglossum Kützing, 1843 
Northern European Seas for Membranoptera Stackhouse, 1809 
Northern European Seas for Microcladia Greville, 1830 
Northern European Seas for Monosporus Solier, 1845 
Northern European Seas for Odonthalia Lyngbye, 1819 
Northern European Seas for Pantoneura Kylin, 1919 
Northern European Seas for Phycodrys Kützing, 1843 
Northern European Seas for Pleonosporium Nägeli, 1862 
Northern European Seas for Plumaria F.Schmitz, 1896 
Northern European Seas for Polysiphonia Greville, 1823 
Northern European Seas for Radicilingua Papenfuss, 1956 
Northern European Seas for Rhodomela C.Agardh, 1822 
Temperate Australasia for Myriogramme Kylin, 1924 
Temperate Northern Pacific for Phycodrys Kützing, 1843 
Temperate Northern Pacific for Pleonosporium Nägeli, 1862 
Tropical Atlantic for Microcladia Greville, 1830 
Tropical Atlantic for Myriogramme Kylin, 1924 
Tropical Atlantic for Pleonosporium Nägeli, 1862 
United Kingdom for Antithamnionella ternifolia (Hooker f. & Harvey) Lyle, 1922  (origin: alien)

Neotype BM 1067621, geounit Durham Coast, identified as Polysiphonia nigra (Hudson) Batters, 1902
Holotype BMNH L 940.142.282, geounit Devon, identified as Hormoceras siliquosum Kützing, 1847