• Dyadentomum Handlirsch, 1904 † (uncertain)
• Dyadimyia Séguy, 1937 (uncertain)
• Dyadobacter Chelius & Triplett, 2000 emend. Reddy & Garcia-Pichel, 2005
• Dyadobacter fermentans Chelius & Triplett, 2000
• Dyadodendrum Sennikov, 1998 † accepted as Archaeodendrum Obut, 1974 †
• Dyadograptus Obut, 1960 † (uncertain)
• Dyadonapites B.D. Tschudy, 1973 † (uncertain)
• Dyadospora P.K. Strother & A. Traverse, 1979 †
• Dyadosporites R.T. Clarke, 1965 †
• Dyadosporites T. van der Hammen, 1954 † accepted as Dyadosporites R.T. Clarke, 1965 †
• Dyadosporonites W.C. Elsik, 1968 † accepted as Dyadosporites R.T. Clarke, 1965 †
• Dyadozoarium Handlirsch, 1904 † (uncertain)