Mesogastropoda
Mesogastropoda is a taxonomic group within the subclass Caenogastropoda, which itself is part of the larger class Gastropoda. Gastropods are a diverse group of mollusks that include snails, slugs, and their relatives. The Mesogastropoda were historically a large and heterogeneous order, encompassing a wide variety of marine and freshwater snails. However, modern phylogenetic studies, based on molecular data, have led to significant revisions of this classification.
The term Mesogastropoda is now considered largely obsolete in formal taxonomic systems. While it was once a
Historically, the Mesogastropoda were characterized by a number of features, including a radula with a specific