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Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Eurypygimorphae
Order: Eurypygiformes
Hackett et al., 2008

Eurypygiformes /jʊərɪˈpɪɪfɔːrmz/ is an order formed by the kagus, comprising two species in the family Rhynochetidae endemic to New Caledonia, and the sunbittern (Eurypyga helias) from the tropical regions of the Americas.[1] Its closest relatives appear to be the tropicbirds of the tropical Atlantic, Indian, and Pacific oceans.[2]


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  1. Hackett, Shannon J.; et al. (2008-06-27). "A Phylogenomic Study of Birds Reveals Their Evolutionary History". Science. 320 (5884): 1763–1768. Bibcode:2008Sci...320.1763H. doi:10.1126/science.1157704. PMID 18583609. S2CID 6472805. Retrieved 2008-10-18.
  2. "Whole-genome analyses resolve early branches in the tree of life of modern birds" Erich D. Jarvis, et al., Science 12 December 2014: Vol. 346 no. 6215 pp. 1320-1331 DOI: 10.1126/science.1253451