演职人员
导演
Penny Palmer
Himself - Presenter
Dallas Campbell
Himself - Leeds University (archive footage)
Robert McNeill Alexander
Himself - University of California (archive footage)
Luiz Alvarez
Himself - San Diego State University (archive footage) (as Prof David Archibald)
David Archibald
Herself - Royal Holloway, University of London (archive footage)
Claire Belcher
Himself - Palaeontologist (archive footage)
Brent Breithaupt
Himself - University of Iowa (archive footage)
Chris Brochu
Herself - Palaeontologist (archive footage)
Julia Clarke
Himself - Palaeontologist (archive footage)
Philip Currie
Herself - Palaeontologist (archive footage)
Kristi Curry Rogers
Himself - Professor of Geology, University of Miami (archive footage)
Cesare Emiliani
Himself - Florida State University (archive footage)
Gregory Erickson
Himself - University of California (archive footage)
Alan Feduccia
Himself - Geological Survey of Canada (archive footage)
Alan Hildebrand
Herself - Fossil Dealer (archive footage)
Florence McGovern
Herself - Natural History Museum (archive footage)
Angela Milner
Himself - Evolutionary Palaeobiologist (archive footage)
Simon Conway Morris
Himself - Yale University (archive footage)
John Ostrom
Himself - University of Texas (archive footage)
Tim Rowe
Himself - Paleobiologist, National Museums of Canada (archive footage)
Dale A. Russell