Caenogastropoda (from Ancient Greek caeno- meaning "recent") is a taxonomic clade, a large diverse group which are mostly sea snails and other marine gastropod mollusks, but also includes some freshwater snails and some land snails.
A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
David R. Lindberg (1948, U.S.A.) is an American malacologist and professor of integrative biology at the University of California, Berkeley.
The gastropods, more commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca, called Gastropoda.
In taxonomy, an informal group is not a well defined taxonomic rank.
Littorinimorpha is a large clade of snails, gastropods, consisting primarily of sea snails (marine species), and also in addition some freshwater snails (aquatic species) and land snails (terrestrial species).
The Nassariidae, Nassa mud snails (USA), or dog whelks (UK), are a taxonomic family of small to medium-sized sea snails, marine gastropod mollusks in the clade Neogastropoda.
Nassarius tiarula, common name the western mud nassa, is a species of small sea snail with gills and an operculum, a marine gastropod mollusk in the family Nassariidae, the nassa mud snails or dog whelks.
Neogastropoda is a clade of sea snails, marine gastropod mollusks.
An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere.
The Ptenoglossa is an informal taxonomic group of sea snails.
Winston F. Ponder (born 1941) is a noted malacologist from New Zealand who has named and described many marine and freshwater animals, especially micromolluscs.