Eothinoceratidae is a family of Lower Ordovician nautiloid cephalopods included in the Ellesmerocerida originally established for the genus Eothinoceras.
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