Placed in Marginodostomia Nomura, 1936, which has a Japanese type species, by van Aartsen & Corgan (1999) but ... [details]
Giannuzzi-Savelli et al. (2014) believe Odostomia sicula Philippi, 1851 to be the same as Megastomia conoidea, but ... [details]
There is disagreement regarding whether Pyrgiscus rufus (Philippi, 1836) and Pyrgiscus fulvocinctus are different ... [details]