Figure 21. Style sac morphology; major typhlosole and ciliary tract (indicated by arrows). (A) Theodoxus fluviatilis. Scale bars (left to right) = 100 Mm, 10 Mm. (B) Neocyclotus dysoni ambiguum. Scale bars = 1 mm, 100 Mm. (C) Strombus mutabilis. Scale bars = 100 Mm, 10 Mm. (D) Crepidula plana. Scale bars = 100 Mm, 100 Mm. (E) Bithynia tentaculata. Scale bars = 1 mm, 100 Mm. (F) Cypraea robertsi. Scale bars = 1 mm, 100 Mm. (G) Conus jaspideus. Scale bars = 100 Mm, 10 Mm. (H) Ilyanassa obsoletus. Scale bars = 100 Mm, 10 Mm. Abbreviations: t1, major typhlosole; t2, minor typhlosole.

Published as part of Strong, Ellen E., 2003, Refining molluscan characters: morphology, character coding and a phylogeny of the Caenogastropoda, pp. 447-554 in Zoological Journal of the Linnean Society 137 (4) on page 521, DOI: 10.1046/j.1096-3642.2003.00058.x, http://zenodo.org/record/5437607