Figure 19 in Extensive diversification of pebblesnails (Lithoglyphidae: Fluminicola) in the upper Sacramento River basin, northwestern USA

Figure 19. Shells, opercula, and radula of Fluminicola umbilicatus. A, holotype (USNM 1020705). B, USNM 1020706. C, USNM 1020709. D, USNM 1020710. E, USNM 1020711. F, USNM 1020716. G, USNM 1020706. Scales = 1.0 mm. H, outer side of operculum (USNM 1020706). Scale = 200 µm. I, portion of radular ribbon (USNM 1020706). Scale = 20 µm. J, central radular teeth (USNM 1020706). Scale = 10 µm. K, lateral radular tooth (USNM 1020706). Scale = 10 µm.