‡ (Emeidae; Ϯ Heavy-footed Moa P. elephantopus) Gr. παχυς pakhus  large, thick; ορνις ornis, ορνιθος ornithos bird; "Genus PACHYORNIS, Lydekker (gen. nov.).  Syn. Palapteryx, Haast [1874] (non Owen, typically)  ...   Pachyornis elephantopus (Owen [1853]).  Syn. Dinornis elephantopus, Owen [1853].  Palapteryx elephantopus, Haast [1874].  The type species." (Lydekker 1891). The extinct Heavy-footed Moa is known only from subfossil remains.
Synon. Mauiornis, Pounamua.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 14 December 2018).