Cast 20

1. 

   Dallas Campbell

   Himself - Presenter

2. Robert McNeill Alexander

   Himself - Leeds University (archive footage)

3. Luiz Alvarez

   Himself - University of California (archive footage)

4. David Archibald

   Himself - San Diego State University (archive footage) (as Prof David Archibald)

5. Claire Belcher

   Herself - Royal Holloway, University of London (archive footage)

6. Brent Breithaupt

   Himself - Palaeontologist (archive footage)

7. Chris Brochu

   Himself - University of Iowa (archive footage)

8. Julia Clarke

   Herself - Palaeontologist (archive footage)

9. Philip Currie

   Himself - Palaeontologist (archive footage)

10. Kristi Curry Rogers

    Herself - Palaeontologist (archive footage)

11. Cesare Emiliani

    Himself - Professor of Geology, University of Miami (archive footage)

12. Gregory Erickson

    Himself - Florida State University (archive footage)

13. Alan Feduccia

    Himself - University of California (archive footage)

14. Alan Hildebrand

    Himself - Geological Survey of Canada (archive footage)

15. Florence McGovern

    Herself - Fossil Dealer (archive footage)

16. Angela Milner

    Herself - Natural History Museum (archive footage)

17. Simon Conway Morris

    Himself - Evolutionary Palaeobiologist (archive footage)

18. John Ostrom

    Himself - Yale University (archive footage)

19. Tim Rowe

    Himself - University of Texas (archive footage)

20. Dale A. Russell

    Himself - Paleobiologist, National Museums of Canada (archive footage)

Crew 3