气候变化领域集成服务门户(CCPortal): Ascent of dinosaurs linked to an iridium anomaly at the Triassic-Jurassic boundary

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DOI	10.1126/science.1065522
	Ascent of dinosaurs linked to an iridium anomaly at the Triassic-Jurassic boundary
	Olsen P.E.; Kent D.V.; Sues H.-D.; Koeberl C.; Huber H.; Montanari A.; Rainforth E.C.; Fowell S.J.; Szajna M.J.; Hartline B.W.
发表日期	2002
ISSN	0036-8075
起始页码	1305
结束页码	1307
卷号	296 期号:5571
英文摘要	Analysis of tetrapod footprints and skeletal material from more than 70 localities in eastern North America shows that large theropod dinosaurs appeared less than 10,000 years after the Triassic-Jurassic boundary and less than 30,000 years after the last Triassic taxa, synchronous with a terrestrial mass extinction. This extraordinary turnover is associated with an iridium anomaly (up to 285 parts per trillion, with an average maximum of 141 parts per trillion) and a fern spore spike, suggesting that a bolide impact was the cause. Eastern North American dinosaurian diversity reached a stable maximum less than 100,000 years after the boundary, marking the establishment of dinosaur-dominated communities that prevailed for the next 135 million years.
英文关键词	Biodiversity; Iridium; Skeletol material; Natural sciences; iridium; dinosaur; iridium; Jurassic; mass extinction; Triassic; article; chemical analysis; correlation analysis; geology; jurassic; mesozoic; nonhuman; paleoecology; priority journal; skeleton; taxonomy; Animals; Dinosaurs; Ecosystem; Evolution; Ferns; Fossils; Geologic Sediments; Iridium; Meteoroids; Minor Planets; North America; Spores; Time; North America; Dinosauria; Filicophyta; Tetrapoda; Theropoda
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244946
作者单位	Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States
推荐引用方式 GB/T 7714	Olsen P.E.,Kent D.V.,Sues H.-D.,et al. Ascent of dinosaurs linked to an iridium anomaly at the Triassic-Jurassic boundary[J],2002,296(5571).
APA	Olsen P.E..,Kent D.V..,Sues H.-D..,Koeberl C..,Huber H..,...&Hartline B.W..(2002).Ascent of dinosaurs linked to an iridium anomaly at the Triassic-Jurassic boundary.Science,296(5571).
MLA	Olsen P.E.,et al."Ascent of dinosaurs linked to an iridium anomaly at the Triassic-Jurassic boundary".Science 296.5571(2002).