• Assulina Bronn in Bronn & Roemer, 1854 accepted as Assilina d'Orbigny in Sagra, 1839 [Family: Nummulitidae]
• Assulina Ehrenberg, 1872 [Family: Assulinidae]
• Marsupina Dall, 1904
• Massarina P.A. Saccardo, 1883
• Massilia La Scola, Birtles, Mallet & Raoult, 2000
• Massilina Schlumberger, 1893
• Massula Dulac, 1867 (uncertain) [Family: Typhaceae]
• Massula K. Müller Frib. ex R.N. Schljakov, 1972 (unaccepted) [Family: Lophoziaceae]
• Massula Petrunkevitch, 1942 † [Family: Gnaphosidae]
• Massuria Thorell, 1887
• Mazellina Rose, 1957 accepted as Pseudodiaptomus Herrick, 1884
• Messelina Tobien, 1962 † accepted as Macrocranion Weitzel, 1949 †
• Musculina Schuchert & Le Vene, 1929 †