Supplementary material 1 for: A subantarctic reigitheriid and the evolution of crushing teeth in these enigmatic Mesozoic mammals

List of content: 1. The phylogenetic affinities of meridiolestidans and Reigitherium 2. Fossil specimens, geologic context, and radiometric age 3. Tooth measurements of Yeutherium pressor and comparisons to other meridiolestidans Table S1 Table S2 4. Additional anatomical features of Yeutherium pressor and support for the identity as M1 of the crown preserved Supplementary Figure 2 5. Extended phylogenetic protocol a) Morphological matrix, taxon and character sampling b) Maximum parsimony c) Undated Bayesian d) Tip-Dated Bayesian 6. Detailed phylogenetic results a) Maximum parsimony analyses Supplementary Figure 3 b) Bayesian analyses Supplementary Figure 4 Table S3 7. Additional anatomical observations and comparisons of reigitheriids and dental reinterpretations in Reigitherium bunodontum Supplementary Figure 5 8. List of modifications to the data matrix of Rougier et al. (2021) a) Modifications on existing characters b) Characters removed c) New characters d) Modifications on character scores 9. Character list 10. List of synapomorphies and autapomorphies 11. Ages for the tip-dated Bayesian analysis 12. TNT matrix and commands for considering inapplicable characters 13. Supplementary references