Ammonite is a 2020 romantic drama film written and directed by Francis Lee. The film is 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 Charlotte Murchison, played by Saoirse Ronan. Gemma Jones, James McArdle, Alec Secăreanu and Fiona Shaw also star. The film had its world premiere at the Toronto International Film Festival on 11 September 2020. It was released in Australia on 14 January 2021 by Transmission Films and in the United Kingdom on 26 March 2021 by Lionsgate.