Gulfoceras was a genus of rhinoceros endemic to North America from the Miocene, living from 23.03—20.4 mya existing for approximately 2.63 million years but is now extinct.
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