• Pectocarya A.P. de Candolle ex Meisner, 1840
• Podocarya W. Buckland, 1836 † (uncertain)
• Proticerya Cockerell, 1895 (uncertain)
• Protocardia Beyrich, 1845 † [Family: Cardiidae]
• Protocardia Conrad, 1860 † (uncertain) [Family: Mollusca (awaiting allocation)]
• Protocaria Timberlake, 1943 (uncertain)
• Protocaris Walcott, 1885 †
• Protochara Womersley & Ophel, 1947 accepted as Chara Linnaeus, 1753
• Protocrea Petch, 1937
• Protophrya Kofoid, 1903
• Prototaria Takeyama & Ozawa, 1984 †