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’.