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机译:The early history of modern birds inferred from DNA sequences of nuclearand mitochondrial ribosomal genes
sbh1@psu.eduHedges SB, Penn State Univ, Dept Biol, Mueller Lab 208, University Pk, PA 16802, USA;
Molecular avian phylogeny; Palaeognathae-neognathae; Galloanserae; Avian evolution; Mammals; Ratites; Origin;