PALEOGNATHS \-+--Struthioniformes | \--Struthionidae (Ostriches) | \-+--+--Rheiformes | | \--Rheidae (Rheas) | | | \-+--Casuariiformes | | \--Casuariidae (Emus & 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)