mathiegf

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Academic interests

My research mainly focuses on the evolution of endothermy in Amniota. I use various proxies, such as stable isotopes of oxygen and osteohistology, and phylogenetic comparative methods to investigate the thermophysiology of extinct species. I worked on early synapsids during my MSc thesis and on pseudosuchians during my PhD thesis. More recently, I was investigating the possible acquisition of endothermy at the node Amniota.
I am also heavily invested in the study of osteohistology in a whole and quantify histological variables in the bone of extinct species to inferred various biological features (such as lifestyle and growth rate).
I define myself as a systematist, too. I am working on a few theoretical works in phylogenetic reconstruction and am deeply invested in the French Society of Systematic, of which I am the general secretary.
My postdoc position is part of the ECHO project studying the convergent evolutionary history of cetaceans and ichthyosaurs. I use there my knowledge in osteohistology and phylogenetic comparative methods to study the convergence of various biological features (such as endothermy) between these wonderful groups.

Background

Jan 2022 – Jun 2022: PostDoc position on “The acquisition of flight in theropodian dinosaurs”, at Pavol Jozef Šafárik University, Košice, Slovakia.
2018-2021: PhD thesis in Palaeobiology, intitled: “Effects of thermophysiology on the evolution of Pseudosuchia (Archosauria) : contributions of paleohistology and isotopic geochemistry using phylogenetic comparative methods.”, at Sorbonne Université, Paris, France.
2016-2018: MSc degree of Sytematics, Evolution and Palaeontology at the Muséum national d’Histoire naturelle, Paris, France. Thesis: “Where the synapsids primitively endothermic? A palaeohistological approach using phylogenetic eigenvector maps.”

Publications

  • Krøglid, Jørgen; Brac, Mathieu Gabriel Faure & Delsett, Lene Liebe (2026). Rib microstructure in thunniform ichthyosaurs and toothed whales. PeerJ. 14, p. 1–28. doi: 10.7717/peerj.21486. Full text in Research Archive
  • Brac, Mathieu Gabriel Faure & Delsett, Lene Liebe (2025). Expanding the osteohistological toolbox for palaeophysiological studies. Lethaia: An International Journal of Palaeontology and Stratigraphy. ISSN 0024-1164. 59(1), p. 1–14. doi: 10.18261/let.59.1.4. Full text in Research Archive
  • Delsett, Lene Liebe; Brac, Mathieu Gabriel Faure; Engelschiøn, Victoria Sjøholt; Alexandra, Houssaye,; Anusuya, Chinsamy, & Hurum, Jørn Harald [Show all 7 contributors for this article] (2025). Vertebral microstructure marks the emergence of pelagic ichthyosaurs soon after the End Permian Mass Extinction. Scientific Reports. 15. doi: 10.1038/s41598-025-14335-y. Full text in Research Archive
  • Brac, Mathieu Gabriel Faure (2024). Pseudosuchian thermometabolism: A review of the past two decades. The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology. ISSN 1932-8486. doi: 10.1002/ar.25609. Full text in Research Archive
  • Cubo, Jorge; Sena, Mariana V. A.; Pellarin, Romain; Brac, Mathieu Gabriel Faure; Aubier, Paul & Cheyron, Cassandra [Show all 9 contributors for this article] (2024). Integrative paleophysiology of the metriorhynchoid Pelagosaurus typus (Pseudosuchia, Thalattosuchia). The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology. ISSN 1932-8486. doi: 10.1002/ar.25548. Full text in Research Archive
  • Brac, Mathieu Gabriel Faure; Woodward, Holly N.; Aubier, Paul & Cubo, Jorge (2024). On the origins of endothermy in amniotes. iScience. 27(4). doi: 10.1016/j.isci.2024.109375. Full text in Research Archive

View all works in NVA

View all works in NVA

Published Sep. 18, 2023 2:48 PM - Last modified Dec. 18, 2024 10:44 AM