goodfellowi

Goodfellowi is a genus of small, freshwater snails with a gill and an operculum, an enclosed shell. It is an extinct genus of freshwater snails, aquatic gastropod mollusks in the family Viviparidae. The genus was named after the paleontologist and geologist John Goodfellow. The genus was first described by the German malacologist Friedrich von Martens in 1860. The type species of the genus is Goodfellowi martensi, which was described by von Martens in the same year. The genus is known from the Eocene epoch, specifically from the Lutetian stage, which is about 47.8 to 40.4 million years ago. The fossils of Goodfellowi have been found in Europe, particularly in Germany and the Czech Republic. The genus is characterized by its small size, with the shell reaching a maximum length of about 10 millimeters. The shell is smooth and has a low spire. The operculum is large and covers the aperture of the shell. The genus is considered to be a member of the family Viviparidae, which is a group of freshwater snails that are known for their ability to give birth to live young. The genus Goodfellowi is of interest to paleontologists and malacologists because it provides insight into the evolution of freshwater snails and the diversification of the family Viviparidae during the Eocene epoch.