Kano, Yasunori Department of Marine Ecosystems Dynamics, Atmosphere and Ocean Research Institute, University of Tokyo, Tokyo, Japan.
- Evolutionary radiation
- Neritidae and Neritiliidae
- Terrestrial families
- Links to Primary Literature
- Additional Readings
A small group (an archaic order) of the class Gastropoda (phylum Mollusca). The group Neritimorpha, also called Neritopsina, comprises approximately 1000 living species classified into eight families. Extinct taxa are more diverse, and their records extend back at least to the Devonian [about 370 million years ago (MYA)] and probably to as early as the Ordovician (approximately 440–460 MYA). In the traditional organization of the class, Neritimorpha was part of the “Archaeogastropoda,” along with Patellogastropoda, Vetigastropoda, and some other basal lineages. However, recent molecular and morphological analyses indicate a closer relationship to Caenogastropoda and Heterobranchia than to other archaeogastropods. See also: Gastropoda; Mollusca; Prosobranchia
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