Headonhillia is an extinct genus of anguine lizard which existed in England during the Eocene epoch. It was first named by Jozef Klembaraa and Bryony Green in 2010, and represents one of the smallest anguines currently known. The type species is Headonhillia parva. Fossils have been found in the Hampshire Basin.
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