Cancellaria gracilis var. maior Ihering, 1899 † (original description)
Cardita pseudopatagonica Ihering, 1899 † accepted as Darwinicardia patagonica (G. B. Sowerby I, 1846) † (original description)
Crassatella kokeni Ihering, 1899 † (original description)
Cucullaea alta G. B. Sowerby I, 1846 † (additional source)
Glycimeris nucleus Ihering, 1899 † accepted as Panopea nucleus (Ihering, 1899) † (original description)
Lucina ortmanni Ihering, 1899 † (original description)
Neilo ornata (G. B. Sowerby I, 1846) † (additional source)
Ostrea percrassa Ihering, 1897 † accepted as Ostrea hatcheri Ortmann, 1897 † (source of synonymy)
Ostrea philippii Ortmann, 1897 † accepted as Crassostrea patagonica (A. d'Orbigny, 1839) † (source of synonymy)
Pecten fissicostalis Ihering, 1899 † (original description)
Pinna semicostata var. magellanica Ihering, 1899 † (original description)
Siphonalia dilatata var. subrecta Ihering, 1899 † accepted as Penion subrectus (Ihering, 1899) † (original description)
Tellina santacruzensis Ihering, 1899 (original description)
Tellina tehuelcha Ihering, 1899 † (original description)
Tritonium bicegoi Ihering, 1899 † (original description)
Turritella ambulacrum G. B. Sowerby I, 1846 † (additional source)
Turritella argentina Ihering, 1897 † accepted as Turritella ambulacrum argentina Ihering, 1897 † (additional source)
Turritella patagonica G. B. Sowerby I, 1846 † (additional source)
Voluta pilsbryi Ihering, 1899 † accepted as Adelomelon pilsbryi (Ihering, 1899) † (original description)