Eolotagnostus is a genus of trilobite in the order Agnostida, which existed in what is now Gansu, China. It was described by Zhou in 1982, and the type species is Eolotagnostus gansuensis.
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