Encyclopaedia Britannica science editor John Rafferty discusses the cause of dinosaur extinction.

John Rafferty, Associate Editor of Earth Sciences, discusses the extinction of the dinosaurs by the impact of a meteorite or comet. A branch of the dinosaurs survived as birds.

Bibliographic Details

Format:	Video
Language:	English
Language Notes:	In English.
Published:	Chicago, IL : Encyclopedia Britannica, 2011.
Series:	Academic Video Online
Subjects:	Dinosaurs > Extinction. Dinosaures > Extinction. Dinosaurs > Extinction Educational films Short films Short films. Educational films. Courts métrages. Films éducatifs.
Online Access:	Connect to this streaming video (Alexander Street Press)