Leontiniidae is an extinct family comprising eleven genera of notoungulate mammals known from the middle Eocene through middle Miocene of South America (McKenna and Bell, 1997).
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0