Fig. 2

Localities and stratigraphies of xenarthrans from the Santiago Roth collection of the PIMUZ. A The map represents the humid Pampean Region (green) according to Prado et al. (2021). Each locality present in the collection is indicated by a number in agreement with Chichkoyan (2017) and Voglino (2020), and a diagram indicating the proportion of each xenarthra 'subfamily' found therein (see Additional file 1: Table S1 for more information and for locality names). The diagram size represents relative abundance, and the colors follow the stratigraphy. B The distribution shows the belonging of each species present in the collection after the taxonomic revision to the temporal subdivision of the geological scale according to Ages/Stages (see Cione & Tonni, 1995; Cione et al., 2015; Hansen, 2019; Prevosti & Forasiepi, 2018; Voglino, 2020). Distribution is associated with known Pleistocene paleoclimatic variation from the work of Zachos et al. (2001) and Solbeizon (2019). Circle size represents the abundance of each species for each subdivision. Symbol: *, Platan and Recent. Bonae., Bonaerian; B-MG, Matuyama/Brunhes Glaciation; GPG, Great Patagonian Glaciation; Intermed., Intermediate; L., Lujanian; LGM, Last Glacial Maximum; MIS, Marine Isotopic Stage; Neosclerocalyp., Neosclerocalyptinae; S., Superior; Sub., subdivision