Extinction and Rebirth
- Episode aired Aug 15, 2005
- Unrated
- 50m
K. Christopher Beard
- Self - Carnegie Museum of Natural History, Pittsburgh
- (as Dr. Chris Beard)
Douglas Erwin
- Self - National Museum of Natural History, Smithsonian Institution
- (as Dr. Douglas Erwin)
Mark Norell
- Self - American Museum of Natural History
- (as Dr. Mark Norell)
Ji Qiang
- Self - National Natural Science Foundation of China
- (as Dr. Ji Qiang)
Gregory Retallack
- Self - University of Oregon
- (as Dr. Greg Retallack)
Andrew Saunders
- Self - Leicester University
- (as Dr. Andrew Saunders)
Roger Smith
- Self - South African Museum
- (as Dr. Roger Smith)
Peter Ward
- Self - University of Washington
- (as Dr. Peter Ward)
Paul Wignall
- Self - University of Leeds
- (as Dr. Paul Wignall)
Lawrence Witmer
- Self - Ohio University
- (as Dr. Lawrence Witmer)
