Family Megathyrididae
 
Argyrotheca Dall, 1900
 
  Argyrotheca cistellula (Searles-Wood, 1841) (3, 4, 5)
  Argyrotheca cordata (Risso, 1826) (3, 4, 5)
  Argyrotheca cuneata (Risso, 1826) (3, 4, 5)
 
Megathiris d'Orbigny, 1847
 
  Megathiris detruncata (Gmelin, 1790) (3, 4, 5)

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