Belongs within: Hypsogastropoda. The Hipponicidae, hoof shells or horse-hoof limpets, are a group of limpet-like gastropods that are sedentary as adults, either on rocks or the shells of other animals. In some species, a calcareous basal plate may be secreted under the animal. The shell of Cheilea bears an internal projection forming an incomplete cone.… Continue reading Hipponicidae