Mougeotella Gaillon, 1833 genus accepted

Mougeotia C.A. Agardh, 1824 genus accepted

Mougeotiella Yamagishi, 1963 genus accepted

Hallasia Rosenvinge, 1924 genus provisionally accepted

Neozygnema Yamagishi, 1963 genus accepted

Mougeotiopsis Palla, 1894 genus accepted

Palaeospiralis A.-S. Edhorn, 1973 genus accepted

Plagiospermum Cleve, 1868 genus accepted

Sphaerocarpus Hassall, 1843 genus accepted

Tetrapidites Klaus in Meyer, 1956 genus accepted

Lloydina A. Ahmad & M. Goldstein, 1972 genus accepted

Euzygogonium H. Itzigsohn in L. Rabenhorst, 1854 genus accepted

Fusilites Hemer & Nygreen, 1967 genus accepted

Goniothrix J.E. Gray, 1864 genus accepted

Mesocarpus Hassall, 1845 genus accepted

Clypeolus Miller, Playford & Le Hérissé, 1997 genus accepted

Phycoleda H. Itzigsohn in L. Rabenhorst, 1854 genus accepted

Pleurocarpus A. Braun, 1855 genus accepted

Pulvinoidium He, 1980 genus accepted

Pyxispora W. West & G.S. West, 1897 genus accepted

Rhynchonema Kützing, 1849 genus accepted

Salmacis Bory de St.-Vincent, 1822 genus accepted

Salmacisella Gaillon, 1833 genus accepted

Schizophacus Pierce, 1976 genus accepted

Sirocladium Randhawa, 1941 genus accepted

Sirogonium Kützing, 1843 genus accepted

Spirochroma J.E. Gray, 1864 genus accepted

Spirogyra Link in C.G.D. Nees, 1820 genus accepted

Spirogyrites V.B. Shukla, 1950 genus accepted

Stellulina Link, 1833 genus accepted

Temnogametum W. West & G.S. West, 1897 genus accepted

Tendaridea Bory de Saint-Vincent, 1822 genus accepted

Tendaridella Gaillon, 1833 genus accepted

Thwaitesia Montagne, 1845 genus accepted

Transeauina M.D. Guiry, 2013 genus accepted

Trigonum A.K. Mahato & P. Mahato, 1994 genus accepted

Tyndaridea Harvey genus accepted

Zygnemopsis (H. Skuja) E.N. Transeau, 1934 genus accepted

Zygogonium Kützing, 1843 genus accepted

Zygnema C. Agardh in Liljeblad, 1816 genus accepted

Tetraporopollenites Frantz, 1960 genus accepted