气候变化领域集成服务门户(CCPortal): Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA

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DOI	10.1130/B31926.1
	Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA
	Smith S.M.; Sprain C.J.; Clemens W.A.; Lofgren D.L.; Renne P.R.; Wilson G.P.
发表日期	2018
ISSN	167606
起始页码	2000
结束页码	2014
卷号	130 期号:2021-11-12
英文摘要	Changes in mammalian faunal composition and structure following the Cretaceous- Paleogene mass extinction are central to understanding not only how terrestrial communities recovered from this ecological perturbation but also the evolution of archaic groups leading to extant mammalian clades. Here, we analyzed changes in mammalian local faunas during the earliest Paleogene biotic recovery on a small spatiotemporal scale. We compiled samples of mammals from four localities in the Hell Creek Formation and Tullock Member of the Fort Union Formation, in the McGuire Creek area, McCone County, Montana, USA, and placed these localities into a high-precision chronostratigraphic framework using 40Ar/39Ar tephra ages and magnetostratigraphy. Within this framework, we quantitatively compared faunal composition, heterogeneity, and richness among McGuire Creek local faunas and made broader comparisons to other earliest Paleogene faunas from throughout the Western Interior of North America. In the first ~320 k.y. of the recovery, mammalian local faunas at McGuire Creek, all of which can be placed in the Puercan 1 North American Land Mammal Age (NALMA) interval zone, underwent modest increases in taxonomic richness and heterogeneity, indicating the beginning of biotic recovery; however, no Mc- Guire Creek fauna reached fully recovered levels of taxonomic richness. Further, appearance of immigrant taxa such as Purgatorius in younger McGuire Creek faunas demonstrates important compositional changes within the Pu1 of McGuire Creek. These results highlight the difficulties with describing the nuanced mammalian recovery process using the NALMA system and emphasize the increasing importance of high-precision dating, especially when comparing faunas across large geographic distances. © 2018 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184996
作者单位	University of Washington, Department of Biology, 24 Kincaid Hall, Box 351800, Seattle, WA 98195, United States; Burke Museum of Natural History and Culture, 1413 NE 45th Street, Seattle, WA 98105, United States; University of California, Berkeley, Department of Earth and Planetary Sciences, 307 McCone Hall, Berkeley, CA 94720, United States; University of California Museum of Paleontology, 1101 Valley Life Sciences Building, Berkeley, CA 94720, United States; Raymond M. Alf Museum of Paleontology, 1175 Baseline Road, Claremont, CA 91711, United States; Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, United States
推荐引用方式 GB/T 7714	Smith S.M.,Sprain C.J.,Clemens W.A.,et al. Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA[J],2018,130(2021-11-12).
APA	Smith S.M.,Sprain C.J.,Clemens W.A.,Lofgren D.L.,Renne P.R.,&Wilson G.P..(2018).Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA.Bulletin of the Geological Society of America,130(2021-11-12).
MLA	Smith S.M.,et al."Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA".Bulletin of the Geological Society of America 130.2021-11-12(2018).