The taxon is represented by ~44 species in one family, the Trogonidae. 

Genus-level timetree of extant Trogonidae based on Oliveros et al. (2019). The distribution of each taxon is indicated by the colour-code used throughout this website (Distribution code). 

Genus-level classification of extant Trogonidae (following Sangster et al., 2023). 

References

Dickens JK, Bitton PP, Bravo GA, and Silveira LF (2021), Species limits, patterns of secondary contact and a new species in the Trogon rufus complex (Aves: Trogonidae), Zool. J. Linn. Soc. 20, 1-42. (free pdf)

Moyle RG (2005), Phylogeny and biogeographical history of Trogoniformes, a pantropical bird order, Biol. J. Linn. Soc. 84, 725-738. (abstract)

Oliveros CH, Andersen MJ, Hosner PA, Mauck WM, Sheldon FH, Cracraft J, and Moyle RG (2020), Rapid Laurasian diversification of pantropical bird family during the Oligocene-Miocene transition, Ibis 162, 137-152. (abstract)

Sangster G, Gregory SMS, and Dickinson EC (2023), Apaladermatinae, a new family-group name for the African trogons (Trogonidae), with clarification of the authorship of Harpactini, Avian Syst. 2, 45-52. (pdf)

Tamashiro RA, White ND, Braun MJ, Faircloth BC, Braun EL, and Kimball RT (2019), What are the roles of taxon sampling and model fit in tests of cyto-nuclear discordance using avian mitogenomic data?, Mol. Phylogenet. Evol. 130, 132-142. (abstract)