Clade dynamics in the fossil record broadly fit expectations from the operation of
competition, predation, and mutualism, but data from both modern and ancient systems …

A rich body of empirically grounded theory has developed about food webs—the networks of
feeding relationships among species within habitats. However, detailed food-web data and …

The end-Permian biotic crisis (∼ 252.5 Ma) represents the most severe extinction event in
Earth's history. This paper investigates diversity patterns in Anomodontia, an extinct group of …

Current plant and animal diversity preserves at most 1–2% of the species that have existed
over the past 600 million years. But understanding the evolutionary impact of these …

Studies of extinction in the fossil record commonly involve comparisons of taxonomic
extinction rates, often expressed as the percentage of taxa (eg, families or genera) going …

In the years after that original lunch, Dunne and Erwin mined existing databases and
compiled, reviewed and revised the two Cambrian food webs.“Our first surprise was that we …