Mopirobottis
Mopirobottis is a genus of small, freshwater snails with a gill and an operculum, an internal shell. It is an extinct genus of freshwater snails, aquatic gastropod mollusks in the family Hydrobiidae. The genus was first described by the German malacologist Friedrich von Martens in 1860. The type species of the genus is Mopirobottis martensi, which was also described by Martens in the same year. The genus is known from the Miocene epoch, which occurred between 23.03 and 5.333 million years ago. The fossils of Mopirobottis have been found in Germany and Austria. The genus is characterized by its small size, with the shell reaching a maximum length of about 2.5 millimeters. The shell is thin, translucent, and has a globose shape. The genus is considered to be a member of the family Hydrobiidae, which is a diverse group of freshwater snails that includes many species that are still living today. The genus Mopirobottis is of interest to paleontologists and malacologists because it provides insights into the evolution of freshwater snails and the changes in freshwater ecosystems during the Miocene epoch.