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https://tolweb.org/Palaeognathae/15837 Palaeognathae palaeognathae https://tl.wikipedia.org/wiki/Wikipedia:Balangkas/Palaeognathae Wikipedia:Balangkas/Palaeognathae - Wikipedia, ang malayang ensiklopedya wikipediabalangkaspalaeognathaemalayangensiklopedya https://scholars.cityu.edu.hk/en/publications/phylogeny-and-sex-chromosome-evolution-of-palaeognathae/ Phylogeny and sex chromosome evolution of Palaeognathae - CityUHK Scholars and sexphylogenychromosomeevolutionpalaeognathae