Shells usually have a distinctive low tooth inside the lower lip of the aperture (shell opening) and a large open umbilicus (hole at the central part of the underside of the shell). [...] In Canada, Broad-banded Forestsnail is restricted to the Carolinian Forest region of Ontario on the north shore and islands of Lake Erie. [...] Note the tooth on the lower lip of the aperture in the lower photo. [...] Broad-banded Forestsnails presumably colonized the islands while they were still connected to the mainland during the 8,000 years between the retreat of the Laurentide ice sheet and inundation of the land bridge. [...] However, genetic data and evidence of local adaptations are unavailable and the “discreteness” and “significance” of the two subpopulations is unknown.
- Pages
- 64
- Published in
- Ottawa
