This superorder comprises the following orders:

• Eurypygiformes
• Phaethontiformes

Family-level timetree of extant Eurypygimorphae following Kuhl et al. (2021), with the distribution of each family being indicated by the colour-code used throughout this website (Distribution code). 

References

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. (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, PNAS 121. (pdf)