Watch: 'Ammonite' trailer starring Saoirse Ronan & Kate Winslet.

Kate Winslet and Saoirse Ronan star in upcoming film, 'Ammonite' - as written and directed by Francis Lee, who previously received widespread critical acclaim for 2017's 'God's Own Country'.

"1840s England, acclaimed but overlooked fossil hunter Mary Anning and a young woman sent to convalesce by the sea develop an intense relationship, altering both of their lives forever."

Watch the trailer below...