Ammonite is a 2020 romantic drama film written and directed by Francis Lee. Loosely inspired by the life of British palaeontologist Mary Anning, played by Kate Winslet, the film centres on a speculative romantic relationship between Anning and geologist Charlotte Murchison, played by Saoirse Ronan. Gemma Jones, James McArdle, Alec Secăreanu and Fiona Shaw also star. Ammonite had its world premiere at the Toronto International Film Festival on 11 September 2020.