Affiliation:
1. Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, UK.
Abstract
The Triassic-Jurassic boundary marks a major faunal mass extinction, but records of accompanying environmental changes are limited. Paleobotanical evidence indicates a fourfold increase in atmospheric carbon dioxide concentration and suggests an associated 3° to 4°C “greenhouse” warming across the boundary. These environmental conditions are calculated to have raised leaf temperatures above a highly conserved lethal limit, perhaps contributing to the >95 percent species-level turnover of Triassic-Jurassic megaflora.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
543 articles.
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