Videos 1 - 5 for Cretaceous–Tertiary extinction event

09:19 -1 year ago
An extinction event (also known as: mass extinction; extinction-level event, ELE) is a sharp decrease in the number of species in a relatively short period of time. Mass ...
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00:41 -7 months ago
last known impact of an object of 10 km or more in diameter was the Cretaceous-Tertiary extinction event 65 million years ago. ... Impact Earth Collision Meteorite Comet ...
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52:58 -1 year ago
of our planets is punctuated by mass extinction events, of which the one 65 million years ago, which marks the Cretaceous-Tertiary boundary, is probably the best known one. ...
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01:34 -1 year ago
. It was one of the last dinosaur genera to appear before the great Cretaceous--Tertiary extinction event.[1] Bearing a large bony frill and three horns on its large four- ...
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04:21 -11 months ago
Dr. John Alroy of the National Center for Ecological Analysis and Synthesis provides new insights on the history and future of species extinctions. Credits: Video: National ...
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