• Pusilla Paramonov, 1954
• Pusilla longirostris Paramonov, 1954
• Pusillabole Alberti, 1973 † (uncertain)
• Pusillaboles † (uncertain)
• Pusillagutta Misyus, 1986 †
• Pusillamarginella Veldsman, 2017 accepted as Marginella Lamarck, 1799
• Pusillana Fagot, 1891 (uncertain)
• Pusillanthus J. Kuijt, 2008
• Pusillargillus Huys & Thistle, 1989
• Pusillargillus nixe (Por, 1964)
• Pusillarolium Zheng, 1999
• Pusillarolium albonemum Zheng, 1999
• Pusillaspis Lindinger, 1906
• Pusillaspis pusilla Lindinger, 1957 accepted as Leucaspis pusilla Löw, 1883
• Pusillaster Lambert, 1920 †
• Pusillathetis Berio, 1976
• Pusillathetis fiorii Berio, 1976-1977 [1977]