After Olson, 1985, Feduccia, 1996, Sibley & Monroe, 1990, Livezey & Zusi, 2001, Mayr, 2004, 2005, and Sangster, 2005
<==o “Caprimulgiformes” (kehrääjälinnut; nightjars) [Recent: 22 genera / 115 species] |?- Steatornithidae (rasvalinnut) [paraphyletic??] [1/1] `--+--o “Podargidae traditionalis” | |-- Podargidae (pöllökehrääjät) [1/3] | `-- Batrachostomidae [subfamily of Podargidae??] [1/11] `--o Cypselomorphae Huxley, 1867 sensu Mayr, 2002 |-- †Protocypselomorphus manfredkelleri Mayr, 2005; M.Eoc. CEu. |--o †Archaeotrogonidae Mourer-Chauviré, 1980 | |-- †Hassiavis laticauda Mayr, 1998; M.Eoc. CEu. | `--o †Archaeotrogon | |-- †A. venustus | |-- †A. zitteli | |-- †A. cayluxensis | `-- †A. hoffstetteri `--+--o Caprimulgiformes sensu stricto | |-- Nyctibiidae (pökkelökehrääjät) [1/7] | `--o Caprimulgidae (nightjars; kehrääjät) | |?- †Ventivorus ragei | |-- Chordeilinae (haukkakehrääjät) [4/9] | `-- Caprimulginae (varsinaiset kehrääjät) [13/77] `--o Daedalornithes Sangster, 2005 |-- Aegothelidae (owlet-nightjars; australiankehrääjät) [1/7] `-- Apodiformes (swifts & hummingbirds; kirskulinnut) [Recent: 131 genera / 443 species]
Reference(s):
- Feduccia, A., 1996: The origin and evolution of birds.
–Yale University Press, New Haven and London, 1996, xii-420 - Mayr, G., 2002: Osteological evidence for paraphyly of the avian order Caprimulgiformes (nightjars and allies).
–Journal of Ornithology: Vol. 143, pp. 82-97 - Mayr, G., 2004: New specimens of Hassiavis laticauda (Aves: Cypselomorphae) and Quasisyndactylus longibrachis (Aves: Alcediniformes) from the Middle Eocene of messel, Germany.
–Courier Forschungsinstitut Senckenburg: #252, pp. 23-28 - Mayr, G., 2005: A new cypselomorph bird from the Middle Eocene of Germany and the early diversification of avian aerial insectivores.
–The Condor: Vol. 107, pp. 342-352 - Olson, S. L., 1985: The fossil record of birds. 79-239.
in Farner, D., King, J. & Parkes, K. (eds.), 1985: Avian Biology. vol VIII.
–Academic Press, New York. 1985. - Sangster, G., 2005: A name for the clade formed by owlet-nightjars, swifts and hummingbirds (Aves).
–Zootaxa: #799, pp. 1-6 - Sibley, C. G. & Monroe, J., BL. 1990: Distribution and taxonomy of birds of the world.
–Yale University Press, New Haven & London, 1990. XXIV-1111
Livezey, B. C. & Zusi, R. L., 2001: Higher-order phylogenetics of modern Aves based on comperative anatomy.
–Netherlands Journal of Zoology: Vol. 51, #2, pp. 179-205