The Sibley-Monroe checklist 9 reference article from the English Wikipedia on 24-Apr-2004
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Sibley-Monroe checklist 9

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The Sibley-Monroe checklist was a landmark document in the study of birds. It drew on extensive DNA-DNA hybridisation studies to reassess the relationships between modern birds.

Table of contents
1 Ciconiiformes (continued)

Ciconiiformes (continued)

Podicipedidae

Phaethontidae

Sulidae

Anhingidae

Phalacrocoracidae

Ardeidae

Scopidae

Phoenicopteridae

Threskiornithidae

Pelecanidae

Ciconiidae

Fregatidae

Spheniscidae

Gaviidae

Procellariidae

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