Navicula dactylus var. argentina Frenguelli, 1923 accepted as
Pinnularia dactylus var. argentina (Frenguelli) Mills, 1934 (source of synonymy)
Navicula nobilis var. cuneata Frenguelli, 1923 accepted as
Pinnularia nobilis var. cuneata (Frenguelli) F.W. Mills, 1934 (new combination reference)
Neidium pauper (Mann) VanLandingham, 1978 accepted as
Navicula pauper Mann, 1925 (new combination reference)
Nitzschia sovereignii VanLandingham, 1978 (original description)
Nitzschia triconfusa VanLandingham, 1978 (original description)
Pinnularia aperta var. aperta (Frenguelli) F.W. Mills, 1934 (new combination reference)
Pinnularia contendens (Mann) VanLandingham, 1978 accepted as
Navicula contendens Mann, 1925 (new combination reference)
Pinnularia doeringii (Frenguelli) Mills, 1934 (new combination reference)
Pinnularia maidanae Guerrero & Vouilloud, 2022 † (additional source)
Podosira biconfusa var. biconfusa VanLandingham, 1978 (original description)
Podosira biconfusa var. reticulata (Long, Fuge & Smith) VanLandingham, 1978 accepted as
Podosira superba var. reticulata Long, Fuge & Smith, 1946 (new combination reference)
Rhaphoneis sharktoothensis VanLandingham, 1978 (original description)