Soley, John Thomson; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1993)
The origin and relationships of the tinamous (Order Tinamiformes), ratites (Order Struthioniformes,
Rheiformes, Casuariiformes, Apterygiformes) and birds of the order Galliformes and Anseriformes is
the subject of much ...