Erik Thompson

饰：Narrator

Thomas Holtz

饰：Self - Vertebrate Paleontologist, University of Maryland

Philip Currie

Philip Currie

饰：Self - Professor, Dinosaur Reseach: University of Alberta

Peter L. Larson

饰：Self - President, Black Hills Institute of Gealogical Research Inc

史蒂夫·艾尔顿

Steve Alten

饰：Self - Author of the Best-Selling Meg Series

George Blasing

饰：Self - Paleontology Expert

Lawrence Witmer

饰：Self - Professor of Anatomy, Ohio University

Larry Dean Martin

饰：Self - Senior Curator of Vertebrate Paleontology, University of Kansas Museum of Natural History

Robert Gaston

饰：Self - President of Gaston Design Inc

Mark Norell

饰：Self - Chairman and Curator, Div of Paleontology - American Museum of Natural History

Christopher A. Shaw

饰：Self - Collectiion Manager, Gorge C Page Museum

Dan Durda

饰：Self - Principal Scientist, Southwest Research Institute