Alun Hubbard

饰：Self - Aberyswyth University

爱丽丝·罗伯茨

Alice Roberts

饰：Self - Presenter

Trevor Valle

Trevor Valle

饰：Self - paleontologist

Jim Mead

饰：Self - East Tennessee State University

Christopher A. Shaw

饰：Self - George C Page Museum

Grant Zazula

饰：Self - Government of Yukon