Mammal SciencePublished 7 January 2025Spatiotemporal variability in the South American mammalian fossil record and its impact on macroevolutionary inferencePedro D. de S. Ugarte · João C. S. Nascimento · Mathias M. PiresFrontiers in Mammal Sciencedoi 10.3389/fmamm.2024.1518039