AVES
  |
NEORNITHES
  |
  +-PALEOGNATHS
  |   \-+--Struthioniformes
  |     |     \--Struthionidae (Ostriches)
  |     |
  |     \-+--+--Rheiformes
  |       |  |    \--Rheidae (Rheas)
  |       |  |
  |       |  \-+--Casuariiformes
  |       |    |    \--+--Dromaiidae (Emus)
  |       |    |       \--Casuariidae (Cassowaries)
  |       |    |
  |       |    \--+--Apterygiformes
  |       |       |    \--Apterygidae (Kiwis)
  |       |       |
  |       |       \--†Aepyornithiformes (Elephant Birds)
  |       |            \--†Aepyornithidae
  |       |                \-+--Mullerornis
  |       |                  \--Aepyornis
  |       |
  |       \-+--†Dinornithiformes (Moas)
  |         |     \-+--†Megalapteryidae = Megalapteryx
  |         |       \-+--†Dinornithidae = Dinornis
  |         |         \-†Emeidae
  |         |             \-+--Pachyornis
  |         |               \-+--Anomalopteryx
  |         |                 \-+--Euryapteryx
  |         |                   \--Emeus
  |         |
  |         \--+--Lithornithiformes
  |            |    \--†Lithornithidae
  |            |
  |            \--Tinamiformes
  |                 \--Tinamidae (Tinamous)
  |
  \-NEOGNATHS
      |--GALLOANSERAE
      |
      \--NEOAVES
           |--METAVES
           \--CORONAVES