Gastropoda [SEP] parent taxon
Gastropoda
The gastropods (), more commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca, called Gastropoda. This class comprises snails and slugs from saltwater, from freshwater, and from the land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs.
The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of
Orthogastropoda
Orthogastropoda was a major taxonomic grouping of snails and slugs, an extremely large subclass within the huge class Gastropoda according to the older taxonomy of the Gastropoda (Ponder & Lindberg, 1997).
This taxon is no longer used according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.
Ponder and Lindberg (1997) in the book "The Southern Synthesis", showed the Orthogastropoda as one of two subclasses of the Gastropoda, the other subclass being a very much smaller group called the Eogastropoda,