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 coracoidal facets. The lateral processes are long and distally expanded. The sternum is just as wide as it is long. There are three costal articulations. The most notable character is the enormous length of the toes, the middle one being longer than the tarso-metatarsus. The ungual phalanges are peculiarly long, narrow and curved, instead of being comparatively short and broad, as in most other Moas.

Type of the genus Megalapteryx hectori, Haast.

Number of species 4.