• Phylogenetic placement: Tyranni: Eurylaimides
• Distribution: Sub-Saharan Africa and Southeast Asia
• Number of extant genera: 2
• Number of extant species: 6

Traditional genus-level classification of extant Calyptomenidae following the AviList checklist v2025. (link) The number of subspecies is given in parentheses. The phylogenetic arrangement is based on Harvey et al. (2020), and matches that of the BOW Phylogeny Explorer tree v1.6. (link)

References [annotated]

Ericson PGP, Klopfstein S, Irestedt M, Nguyen JMT, and Nylander JAA (2014), Dating the diversification of the major lineages of Passeriformes (Aves), BMC Evol. Biol. 14, e:8. (pdf) [note: treated one species of Calyptomena and Smithornis, respectively]

Harvey MG, Bravo GA, Claramunt S, Cuervo AM, Derryberry GE, Battilana J, Seeholzer GF, McKay JS, O'Meara BC, Faircloth BC, Edwards SV, Perez-Eman J, Moyle RG, Sheldon FH, Aleixo A, Smith BT, Chesser RT, Silveira LF, Cracraft J, Brumfield RT, and Derryberry EP (2020), The evolution of a tropical biodiversity hotspot, Science 370, 1343-48. (pdf) (hi-res tree) [note: treated all six species]

Moyle RG, Chesser RT, Prum RO, Schikler P, and Cracraft J (2006), Phylogeny and evolutionary history of Old World suboscine birds (Aves: Eurylaimides). Am. Mus, Novit. 3544, 22 pp. (pdf) [note: treated Calyptomena viridis, C. whiteheadi, Smithornis capensis and S. rufolateralis]

Oliveros CH, Field DJ, Ksepka DT, Barker KF, Aleixo A, Andersen MJ, Alström P, Benz BW, Braun EL, Braun MJ, Bravo GA, Brumfield RT, Chesser RT, Claramunt S, Cracraft J, Cuervo AM, Derryberry EP, Glenn TC, Harvey MG, Hosner PA, Joseph L, Kimball RT, Mack AL, Miskelly CM, Peterson AT, Robbins MB, Sheldon FH, Silveira LF, Smith BT, White ND, Moyle RG, and Faircloth BC (2019), Earth history and the passerine superradiation, Proc Natl. Acad. Sci. 116, 7915-25. (pdf) [note: treated Calyptomena viridis and Smithornis rufolateralis]

Selvatti AP, Galvão A, Pereira AG, Gonzaga LP, and de Moraes Russo CA (2017), An African origin of Eurylaimides (Passeriformes) and the successful diversification of the ground-foraging Pittas (Pittidae), Mol. Biol. Evol. 34, 483-499. (free pdf) [note: treated all species except Calyptomena hosii] 

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) [note: treated Calyptomena viridis and Smithornis capensis]