A small mollusk with winglike extensions to its body that it uses for swimming.
Orders Thecosomata (with shells) and Gymnosomata (lacking shells), class Gastropoda
- ‘The commonest macrofaunal elements of the Carriacou succession are benthic molluscs, pteropods, scleractinian corals and, particularly in the Grand Bay Formation, articulate brachiopods (Donovan and Harper, 1997, in press).’
- ‘The unusual relationship between the pelagic mollusc Clione antarctica, a pteropod, and its amphipod abductor has been described as ‘antagonistic symbiosis’.’
- ‘Initially, Walcott considered Matthevia to be a snail, either a pteropod or a new form of equivalent rank, although he made this assignment with reservation.’
Mid 19th century from modern Latin Pteropoda (plural), from Greek pteron ‘wing’ + pous, pod- ‘foot’.