SinutropisSinutropis is a genus of fossil sea snails, extinct euomphalid archaeogastropods from the Upper Silurian.DescriptionThe shell has rounded whorls and a deep rounded sinus on the upper lip of the aperture in place of the typical exhalent angulation of most related genera. Otherwise the shell is not obviously ornamented.SpeciesAccording to the Paleobiology Database, the following species are included in this genus: Sinutropis esthetica Perner, 1903Sinutropis interrumpens Perner, 1903Sinutropis spiralis Rohr, 1988Sinutropis tenera Perner, 1903