Morrison, CassiusScherer, Charlie RogerO'Callaghan, Ezekiel V.Layton, CollinBoisvert, ColinRolando, Mauro AranciagaDurrant, LeroySalas, PedroAllain, Steven J.R.Gascoigne, Samuel J.L.2025-08-222025-08-222025-05Morrison, C, Scherer, C R, O'Callaghan, E V, Layton, C, Boisvert, C, Rolando, M A, Durrant, L, Salas, P, Allain, S J R & Gascoigne, S J L 2025, 'Rise of the king : Gondwanan origins and evolution of megaraptoran dinosaurs', Royal Society Open Science, vol. 12, no. 5, 242238. https://doi.org/10.1098/rsos.2422382054-5703ORCID: /0000-0002-2984-1810/work/190476698https://hdl.handle.net/2164/25897The authors wish to thank the following people for their input and advice in the early stages of this project: R. Benson, S. Brusatte, J. O’Connor, E. Cox, F. Novas, F. Agnolin, M. Lamanna, A. Nye, C. Ummel, E. Warner-Cowgill, K. Beguesse and D. Lomax. We thank Sergey Krasovskiy, Cindy Joli, René Dávila Rodríguez and Julio F. Garza for their contributions towards the supplementary art piece. The Willi-Hennig Society is acknowledged for its generosity in producing the open-source TNT software. E.V.O thanks his wife for holding down the fort during the writing process. We thank Michael Pittman, Andre Rowe and a third anonymous reviewer for their constructive feedback on improving this manuscript.122287060engBiogeographyLate CretaceousMegaraptoraTyrannosauroideaQH301 BiologyGeneralSupplementary DataDASSupplementary InformationQH301Journal article10.1098/rsos.242238http://www.scopus.com/inward/record.url?scp=105004919507&partnerID=8YFLogxK125