Menadon is an extinct genus of synapsid which existed in Madagascar during the middle to late Triassic period. The type species is Menadon besairiei. Recent research has shown the existence of Menadon besairiei in Paleorrota geopark in the city of Santa Cruz do Sul, state of Rio Grande do Sul, Brazil.
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