Fabio A. Machado, Assistant Professor and Curator of Vertebrates

Morphology, Morphometrics, Macroevolution, Mammals

Ph.D., 2017, Universidade de São Paulo

Office: LSW 304/305

Email: fabio.machado@okstate.edu 

Lab website: Evolutionary Morphology and Morphometrics lab

Specific Interests

Why sometimes are closely related species so different, while distantly related ones are so similar? Are there rules governing the generation of the biological form over long time scales? How does ecology interact with said rules to generate the biodiversity we see today and in the fossil record?

In my research, I aim to approach these questions by integrating information from anatomy, function, genetics, phylogenetics, paleontology, and development to understand the rules that govern the evolution of the biological form at multiple scales. My ongoing research evaluates the role of developmental rules in shaping the evolution of the mammalian skull and dentition, with a special emphasis on Carnivora and Primates. In addition to my main line of research, I use collection specimens to study evolution, systematics, and taxonomy of mammals and reptiles.


Selected Publications (full list here)

  • Hubbe A, Machado FA, Melo D, Garcia G, Sebastião H, Porto A, Cheverud J, Marroig G. 2023. Morphological integration during postnatal ontogeny: implications for evolutionary biology. Evolution. doi: 10.1093/evolut/qpac052
  • Machado FA, Marroig G, Hubbe A. 2022. The preeminent role of directional selection in generating extreme morphological change in Glyptodonts (Cingulata; Xenarthra). Proceedings of the Royal Society of London. Series B, Biological Sciences. doi: 10.1098/rspb.2021.2521
  • Emin-Lima R, Machado FA, Siciliano S, Gravena W, Aliaga-Rossel E, Silva Junior JS, Hingst-Zaher E, de Oliveira LR Morphological disparity in the skull of Amazon River dolphins of the genus Inia (Cetacea, Iniidae) is inconsistent with a single taxon . Journal of Mammalogy 103(6):1278-1289. doi: 10.1093/jmammal/gyac039
  • Machado FA. 2020. Selection and constraints in the ecomorphological adaptive evolution of the skull of extant Canidae. The American Naturalist 192(2): 197-215 doi: 10.1086/709610
  • Machado FA, Teta P. Morphometric analysis of skull shape reveals unprecedented diversity of African Canidae. Journal of Mammalogy 101(2): 349-360 doi: 10.1093/jmammal/gyz214
  • Machado FA, Zahn TMG, Marroig G. Evolution of morphological integration in the skull of Carnivora (Mammalia): Changes in Canidae lead to increased evolutionary potential of facial traits. Evolution 72(7):1399-1419 doi: 10.1111/evo.13495