Notiomastodon is an extinct genus of proboscidean endemic to South America during the Pleistocene from 1.810 Ma—780,000 years ago, living for approximately 1.019 million years.
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