Hilarcotherium is an extinct genus of astrapotheriid mammal that lived in South America during the middle Miocene. The type and only known species is H. castanedaii, found in sediments of the La Victoria Formation in the Tolima Department in Colombia.
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