Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell.
Ancylini is a tribe of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies. This tribe used to be treated as a family; the current taxonomic placement within Planorbidae is according to the taxonomy of the Gastropoda.
The Rocky Mountain capshell is a species of freshwater snail in the family Acroloxidae, the river limpets. It is the only member of the family found in North America.
The Australian freshwater limpet or Tasmanian freshwater limpet, scientific name Ancylastrum cumingianus, is a species of air-breathing freshwater snail or freshwater limpet, an aquatic pulmonate gastropod mollusc in the family Planorbidae. This species is endemic to freshwater lakes in the Central Plateau of Tasmania.
Burnupia crassistriata is a species of small freshwater snail or limpet, an aquatic gastropod mollusk which was traditionally placed in the family Planorbidae, the ram's horn snails and their allies.
Burnupia is a genus of small freshwater snails or limpets, aquatic gastropod mollusks that are traditionally placed in the family Planorbidae.
Burnupia stuhlmanni is a species of small freshwater snail or limpet, an aquatic gastropod mollusk which was traditionally placed in the family Planorbidae, the ram's horn snails and their allies.
Ferrissia mcneili, common name the hood ancylid, is a species of small freshwater snail or limpet, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.
Ferrissia tanganyicensis is a species of small freshwater snail or limpet, an aquatic gastropod in the family Planorbidae.
Rhodacmea is a genus of small freshwater snails or limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies.
Rhodacmea filosa, the wicker ancylid, is a species of small, air-breathing, freshwater snail or limpet, a pulmonate gastropod in the family Planorbidae.
Ferrissia californica is a species of small freshwater limpet, an aquatic gastropod mollusk in the family Planorbidae.
Acroloxus lacustris, or the lake limpet, is a small freshwater limpet or snail, a species of aquatic gastropod mollusk in the family Acroloxidae.
Burnupia stenochorias is a species of small freshwater snail or limpet, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.
Ferrissia gentilis is a species of small freshwater snail or limpet, an aquatic gastropod mollusc in the family Planorbidae, the ram's horn snails and their allies.
Choanomphalus maacki is a species of freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids.
Acroloxus egirdirensis is a species of very small freshwater snail, which because of their shape are known as limpets, aquatic pulmonate gastropods in the family Acroloxidae.
Acroloxus pseudolacustris is a species of very small freshwater snail, which because of their shape are known as limpets, aquatic pulmonate gastropods in the family Acroloxidae.
Laevapex fuscus, the dusky ancylid, is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc or micromollusc in the family Planorbidae, the ram's horn snails and their allies.
