PaleoDB taxon number: 202428
Diagnosis. Shell low-spired, lens-shaped, with two spiral edges or keels; base moderately to weakly convex; umbilicus surmounted by radial folds; apertural edge broadened triangularly on the transition from the columella to the base.
Full reference: J. Gründel, A. Kaim, A. Nützel and C. T. S. Little. 2011. Early Jurassic Gastropods form England. Palaeontology 54(3):481-510
Sister taxa: none
Type: Lensataphrus tatei
Ecology: epifaunal grazer