TABLE 1 in Detecting morphological gaps in tooth outlines of a Pachyrukhinae (Hegetotheriidae, Notoungulata) lineage: systematic and palaeobiogeographical significance of the records from Northwestern Argentina

TABLE 1. — Geographical categories, sample size, and provenance of the material of Tremacyllus Ameghino, 1891 considered for this work (also see Fig. 1). Geographical categoriesLocalities (Province)Lithostratigraphic unitsStudied specimens (N)NWAEntre Ríos, Loma Rica, Corral Quemado, Río Yaspis, Villavil, western slopes of Cerro Pampa (Catamarca Province); Encalilla, Choromoro valley (Tucumán Province); Cañada de la Costa (Santiago del Estero Province)Chiquimil, Andalhuala, India Muerta (Late Miocene-Early Pliocene), and Las Cañas (Early Pliocene, Armella et al. 2020) formations44La PampaBajo Giuliani, Caleufú, Salinas Grandes de Hidalgo (La Pampa Province)Cerro Azul Formation (Late Miocene; Sostillo et al. 2018)18MendozaRío seco isla grande, Río seco isla chica, Río seco de la última aguada, Huayquerías de la Horqueta sur (Mendoza Province)Tunuyán and Huayquerías formations (Late Miocene; Vera & Ercoli 2018)12Monte Hermoso, Atlantic Coast (Buenos AiresMonte Hermoso Formation (Early Pliocene;Atlantic CoastProvince)Tomassini et al. 2013)8