Figure 3 from: Rassam H, Moutaouakil S, Benaissa H, Albrecht C, Ghamizi M (2020) First record of Pisidium subtruncatum Malm, 1855 (Bivalvia, Sphaeriidae) in an African cave. Subterranean Biology 34: 99-108. https://doi.org/10.3897/subtbiol.34.50916

Figure 3 Two specimens of P. subtruncatum from Ait M'hamed cave a, d external view of the shell of the left and right sides of both specimens b, e dorsal view of both specimens c, f internal view of left and right valves of both specimens.