弗里茨·韦弗

Fritz Weaver

饰：Narrator,1 episode, 1989,

保罗·希纳尔

Paul Shenar

饰：Narrator,2 episodes, 1988-1989,

理查德·基利

Richard Kiley

饰：Narrator,2 episodes, 1987-1988,

约瑟夫·索默

Josef Sommer

饰：Narrator,1 episode, 1988,

弗兰克·兰格拉

Frank langella

饰：Narrator,1 episode, 1990,

马克·雷纳德

Mark Lenard

饰：Narrator,1 episode, 1992,

Robert Bakker

Robert Bakker

饰：Self,1 episode, 1989,

Philip Currie

Philip Currie

饰：Self,1 episode, 1989,

Nick Sagan

饰：Self,1 episode, 1990,

Carolyn Shoemaker

饰：Self,1 episode, 1990,

Eugene Shoemaker

饰：Self,1 episode, 1990,

Andrew Ingersoll

饰：Self,1 episode, 1990,

乔尔·格雷

Joel Grey

饰：Narrator,1 episode, 1991,

Jack Horner

饰：Self,1 episode, 1989,

史蒂芬·杰伊·古尔德

Stephen Jay Gould

饰：Self,1 episode, 1989,

卡尔·萨根

Carl Sagan

饰：Self,1 episode, 1990,

Larry Soderblom

Larry Soderblom

饰：Self,1 episode, 1990,

Edward Stone

Edward Stone

饰：Self,1 episode, 1990,

Brad Smith

Brad Smith

饰：Self,1 episode, 1990,

詹姆斯·柯本

James Coburn

饰：Host (1990-1991),unknown episodes,