After Olson, 1985, Sibley & Monroe, 1990, Feduccia, 1980, 1996, and Mayr, 2000
<==o Bucerotiformes [incl. Upupiformes] (hornbills and relatives; sarvinokkalinnut) [Recent: 14 genera / 69 species] |--o Upupae [Upupiformes sensu Mayr, 2000] (hoopoes; harjalinnut) | |--o †Messelirrisor Mayr, 1998; M.Eoc. Eu. [Messelirrisoridae sensu Mayr, 1998] | | |-- †M. halcyorostris Mayr, 1998 | | |-- †M. parvus Mayr, 1998 | | `-- †M. grandis Mayr, 2000 | `--+-- Phoeniculidae (woodhoopoes; säihkykiipijät) [2/8] | `--o Upupa [Upupidae] (hoopoes; harjalinnut) [1/2] | |-- †U. antaios Olson, 1975 (santhelenanharjalintu) [St. Helena Isl.] | |-- U. epops (hoopoe; harjalintu) | `-- U. africana (African Hoopoe; afrikanharjalintu) `--o Buceroidea [Bucerotiformes s.s.] (sarvekkaat) |-- Bucorvidae (sarvikorpit) [2/6] `-- Bucerotidae (sarvekkaat) [9/53]
Reference(s):
- Feduccia, A., 1980: The age of birds.
–Harvard University Press, Cambridge, Massachutess. 1980. - Feduccia, A., 1997: The Origin and Evolution of Birds.
–Yale University Press, New Haven, 1996, - Mayr, G., 2000: Tiny hoopoe-like birds from the Middle Eocene of Messel (Germany).
–The Auk: Vol. 117, #4, pp. 964-970 - Olson, S. L., 1975: Paleornithology of St. Helena Island, South Atlantic Ocean.
–Smithsonian Contributions to Baleobiology: Vol. 23, pp. iv-49 - 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, - Sibley, C. G. & Monroe, B. L., 1990: Distribution and taxonomy of birds of the world.
–Yale University Press, New Haven & London, 1990, xxiv-1111