Jeremy Rayner

饰：Himself - Alexander Professor of Zoology, University of Leeds, U

Bruce H. Tiffney

饰：Himself - Palaeobotanist, University of California, USA

理查德·福提

Richard Fortey

饰：自己

克里斯蒂安·罗德斯卡

Christian Rodska

饰：Narrator

Stephen R. Palumbi

Stephen R. Palumbi

饰：Self - Professor in Marine Sciences, Harvard University, USA

马克·多纳托

Marc Donato

Taylor Abrahamse

William Gilly

饰：Self - Cell and Developmental Biology and Marine Biology

Philip Currie

Philip Currie

饰：Self - Palaeoornithologist, Royal Tyrell Museum of Palaeontology, Canada

Robert McNeill Alexander

饰：Self - Biomechanics Specialist, Leeds University, UK

Kurt M. Kotrschal

饰：Self - Zoological Institute, University of Vienna, Austria