This graph plots extinction rates of marine animal families over the last 600 million years. The shaded band indicates the normal range of extinction rates, known as "background extinction." The five ...
About 66 million years ago – perhaps on a downright unlucky day in May – an asteroid smashed into our planet. Even groups that weathered the catastrophe, such as mammals, fishes and flowering plants, ...
Assessing extinction rates / Robert M. May, John H. Lawton, Nigel E. Stork -- Extinctions in the fossil record / David Jablonski -- Constancy and change of life in the sea / J.B.C. Jackson -- Insect ...
Extinction and radiation : how the fall of dinosaurs led to the rise of mammals / J. David Archibald
The late Cretaceous nonavian dinosaur record -- In the shadow of nonavian dinosaurs -- In search of our most ancient eutherian ancestors -- Patterns of extinction at the K/T boundary -- Causes of ...
Prehistoric humans hunt a woolly mammoth. More and more research shows that this species – and at least 46 other species of megaherbivores – were driven to extinction by humans. The debate has raged ...
Trade-induced farmland expansion is a major factor that drives threats to wildlife species. As countries increasingly import agricultural goods from abroad, they outsource much of the environmental ...
(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Stewart Edie, Smithsonian Institution (THE CONVERSATION) About 66 million years ago – ...
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