Keywords: Fissurella microtrema 001.jpg en Fissurella microtrema G B Sowerby I 1835; family Fissulleridae 2016-01-30 09 43 26 https //commons wikimedia org/wiki/File Naturalis_Biodiversity_Center_-_ZMA MOLL 302743_-_Emarginula_microtrema_ Sowerby _1835 _-_Fissurellidae_-_Mollusc_shell jpeg Naturalis Biodiversity Center other versions Custom license marker 2016 01 30 Naturalis donation CC-0 Fissurella microtrema Molluscs at Naturalis from the Zoölogisch Museum Amsterdam Media donated by Naturalis Biodiversity Center |