Pteropodan | definition of pteropodan by Medical dictionary
pteropod (redirected from pteropodan)
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Fig. 261 Pteropod . General morphology.
sea butterfly a small gastropod mollusc found in the plankton, with the foot modified into wing-like structures used for swimming. Pteropods are known as ‘sea butterflies’ because of the appearance given to them by these expansions of the foot.