Representatives of the genus Ferussina. A–C Ferussina anostomaeformis Grateloup, 1827, Gaas (Larrat), France, lower Oligocene; syntype, UBRG, Grateloup collection, no. 65-2-150 D Ferussina anostomaeformis, St-Paul-lès-Dax (Abesse, “Château”), France, upper Oligocene; MNHN.F.A72133 E–H Ferussina anomphalus capellinii (Sandberger, 1873), Blaustein (Arnegg), Germany, lower Oligocene; syntype, SMNS 22180 I–L Ferussina tricarinata (Braun, 1838), Hochheim, Germany, upper Oligocene (Hochheim Formation, “Landschneckenkalk”); NHMW 75000/E/1778. Photos: Laurent Charles (A–C), Pierre Lozouet (D), Rodrigo Salvador (E–H), Barna Páll-Gergely (I–L). Scale bars: 1 cm.