Henry Ian Cusick
Gideon Mantell
Paul Brightwell
Leney
Alan Cox
Richard Owen
Derek Jacobi
Narrator (voice)
Robert Morgan
Charles Lyell
Michael Pennington
William Buckland
Rachel Shelley
Mary Mantell
Michelle Bunyan
Caroline Owen
Kristian Griffiths
Walter Mantell (Aged 14-18)
Rebecca McClay
Mary Anning
Laurie Goode
Removal Man (uncredited)