The taxon comprises ~196 species in 3 traditional families in the following orders:
Traditional family-level timetree of extant Otidimorphae based on Stiller et al. (2024), with the distribution of each family being indicated by the colour-code used throughout this website (Distribution code).
Traditional family-level classification of extant Otidimorphae.
References
Jarvis ED, Mirarab S, Aberer AA, et al. (2014), Whole-genome analyses resolve early branches in the tree of life of modern birds, Science 346, 1320-1331.(pdf)
Kuhl H, Frankl-Vilches C, Bakker A, Mayr G, Nikolaus G, Boerno ST, Klages S, Timmermann B, and Gahr M (2021), An unbiased molecular approach using 3'UTRs resolves the avian family-level tree of life, Mol. Biol. Evol. 38, 108-127. (free pdf)
Prum RO, Berv JS, Dornburg A, Field DJ, Townsend JP, Lemmon EM, and Lemmon AR (2015), A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing, Nature 526, 569-573. (abstract)
Stiller J, Feng S, Chowdhury AA, Rivas-González I, Duchêne DA, Fang Q, Deng Y, Kozlov A, Stamatakis A, Claramunt S, Nguyen JMT, Ho SYW, Faircloth BC, Haag J, Houde P, Cracraft J, Balaban M, Mai U, Chen G, Gao R, Zhou C, Xie Y, Huang Z, Cao Z, Yan Z, Ogilvie HA, Nakhleh L, Lindow B, Morel B, Fjeldså J, Hosner PA, da Fonseca RR, Petersen B, Tobias JA, Székely T, Kennedy JD, Reeve AH, Liker A, Stervander M, Antunes A, Tietze DT, Bertelsen M, Lei F, Rahbek C, Graves GR, Schierup MH, Warnow T, Braun EL, Gilbert MTP, Jarvis ED, Mirarab S, and Zhang G (2024), Complexity of avian evolution revealed by family-level genomes, Nature 629, 851-860. (pdf)
Wu S, Rheindt FE, Zhang J, Wang J, Zhang L, Quan C, Li Z, Wang M, Wu F, Qu Y, Edwards SV, Zhou Z, and Liu L (2024), Genomes, fossils, and the concurrent rise of modern birds and flowering plants in the Late Cretaceous, Proc. Natl. Acad. Sci. 121, e:2319696121. (pdf)
Zhao M, Thom G, Faircloth BC, Andersen MJ, Barker FK, Benz BW, Braun MJ, Bravo GA, Brumfield RT, Chesser RT, Derryberry EP, Glenn TC, Harvey MG, Hosner PA, Imfeld TS, Joseph L, Manthey JD, McCormack JE, McCullough JM, Moyle RG, Oliveros CH, White Carreiro ND, Winker K, Field DJ, Ksepka DT, Braun EL, Kimball RT, and Smith BT (2025), Efficient inference of macrophylogenies: Insights from the Avian Tree of Life, bioRxiv preprint server (pdf)