1846 J. E. Worcester Oar-footed, having feet used as oars. Burnet.
1870 H. A. Nicholson I. xxxiii. 184 The Copepoda, or Oar-footed Crustaceans, are all of small size, and are of common occurrence in fresh water.
1987 J. Hersey (1988) 45 Here were various copepods ‘oar-footed ones’.