Ana Natalia Zimicz, Mercedes Fernández, Mariano Bond, Laura Chornogubsky, Michelle Arnal, Magalí Cárdenas und Juan Carlos Fernicola: Archaeogaia macachaae gen. et sp. nov., one of the oldest Notoungulata Roth, 1903 from the early-middle Paleocene Mealla Formation (Central Andes, Argentina) with insights into the Paleocene-Eocene south American biochronology. Journal of South American Earth Sciences, 2020, S. 102772, doi:10.1016/j.jsames.2020.102772
Luis Otavio Rezende Castro, Daniel García-López, Lilia Paglarelli Bergqvist und Hermínio Ismael de Araújo-Júnior: A new basal notoungulate from the Itaboraí Basin (Paleogene) of Brazil. Ameghiniana. 58 (3), 2021, S. 272–288, doi:10.5710/AMGH.05.02.2021.3387
Nicolás Bauzá, Javier N. Gelfo und Guillermo M. López: Early steps in the radiation of notoungulate mammals in southern South America: A new henricosborniid from the Eocene of Patagonia. Acta Palaeontologica Polonica 64, 2019, doi:10.4202/app.00565.2018
Gastón Martínez, María T. Dozo, Javier N. Gelfo, Martín R. Ciancio und Rolando González-José: A new toxodont (Mammalia, Panperissodactyla, Notoungulata) from the Oligocene of Patagonia, Argentina, and systematic considerations on the paraphyletic 'Notohippidae'. Journal of Systematic Palaeontology 18 (24), 2020, S. 1995–2013, doi:10.1080/14772019.2021.1872723
André R. Wyss, John J. Flynn und Darin A. Croft: New Paleogene notohippids and leontiniids (Toxodontia; Notoungulata; Mammalia) from the Early Oligocene Tinguiririca Fauna of the Andean Main Range, central Chile. American Museum Novitates 3903, 2018, S. 1–42, doi:10.1206/3903.1
Brenda S. Ferrero, Gabriela I. Schmidt, María I. Pérez-García, Daniel Perea und Ana M. Ribeiro: A new Toxodontidae (Mammalia, Notoungulata) from the upper Pliocene–lower Pleistocene of Uruguay. Journal of Vertebrate Paleontology, 2022, S. e2023167, doi:10.1080/02724634.2021.2023167
Guillermo M. López, Javier N. Gelfo, Nicolás Bauzá, Mariano Bond und Marcelo F. Tejedor: Biochron and diversity of Archaeopithecidae (Mammalia, Notoungulata) and a new genus and species from the Eocene of Patagonia, Argentina. Ameghiniana 57 (2), 2020, 103–116, doi:10.5710/AMGH.18.01.2020.3291
Bárbara Vera, Alejo C. Scarano und Marcelo A. Reguero: A new Interatheriinae (Mammalia, Notoungulata) from the Cerro Boleadoras Formation (Santa Cruz, Argentina) and the evolution of the tarsus within the lineage during the Miocene. Journal of Systematic Palaeontology, 2021, doi:10.1080/14772019.2021.1995906
Darin A. Croft und Federico Anaya: A new typothere notoungulate, Juchuysillu arenalesensis (Mammalia: Interatheriidae), from the Miocene Nazareno Formation of southern Bolivia. Ameghiniana 57 (2), 2020, S. 189–208, 2020, doi:10.5710/AMGH.11.01.2020.3271
Mercedes Fernández, Juan C. Fernicola und Esperanza Cerdeño: The genus Patriarchus Ameghino, 1889 (Mammalia, Notoungulata, Typotheria), from the Santa Cruz Formation, Santa Cruz Province, Argentina. Journal of Vertebrate Paleontology 39 (2), 2019, S.e1613416, doi:10.1080/02724634.2019.1613416
Esperanza Cerdeño, Bárbara Vera und Ana María Combina: A new early Miocene Mesotheriidae (Notoungulata) from the Mariño Formation (Argentina): Taxonomic and biostratigraphic implications. Journal of South American Earth Sciences, 2018, doi:10.1016/j.jsames.2018.06.016
Agostina Ferro, Daniel A. García-López, Luis S. Saade, Pablo J. Alonso-Muruaga und Agustín Scanferla: A new ‘archaeohyracid’ (Notoungulata, Typotheria) from the Eocene of north-western Argentina: anatomy, phylogenetic relationships and evolutionary implications. Journal of Systematic Palaeontology 21 (1), 2023, S. 2214565, doi:10.1080/14772019.2023.2214565
