«Gaviiformes»: berrikuspenen arteko aldeak

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| image caption = ''Gavia pacifica''
| authority = [[Alexander Wetmore|Wetmore]] & [[Waldron de Witt Miller|Miller]], 1926
| subdivision_ranks = Azpitaldeak
| subdivision =
* †''[[Gaviella]]''
* †''[[Neogaeornis]]''
* †''[[Polarornis]]''
* †[[Colymboididae]]
* [[Gaviidae]]
| synonyms =
Colymbiformes <small>[[Richard Bowdler Sharpe|Sharpe]], 1891</small>
}}
'''Gaviiformes''' ''[[Aves]]'' klaseko [[Ordena (biologia)|ordena]] da, 5 espezie dituena<ref name=cle>[http://www.birds.cornell.edu/clementschecklist/Clements%20Checklist%206.3.2%20December%202008.xls/view Clements, J. F. 2007. ''The Clements Checklist of Birds of the World, 6th Edition''. Cornell University Press]</ref>.