Flat latitudinal gradient in Paleocene mammal richness suggests decoupling of climate and biodiversity

Research Article| February 01, 2011 Flat latitudinal gradient in Paleocene mammal richness suggests decoupling of climate and biodiversity Peter J. Rose; Peter J. Rose 1Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Search for other works by this author on: GSW Google Scholar David L. Fox; David L. Fox 1Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Search for other works by this author on: GSW Google Scholar Jonathan Marcot; Jonathan Marcot 2School of Integrative Biology, University of Illinois, Urbana, Illinois 61801, USA Search for other works by this author on: GSW Google Scholar Catherine Badgley Catherine Badgley 3Department of Ecology and Evolutionary Biology, Museum of Paleontology, University of Michigan, Ann Arbor, Michigan 48109, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Peter J. Rose 1Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA David L. Fox 1Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Jonathan Marcot 2School of Integrative Biology, University of Illinois, Urbana, Illinois 61801, USA Catherine Badgley 3Department of Ecology and Evolutionary Biology, Museum of Paleontology, University of Michigan, Ann Arbor, Michigan 48109, USA Publisher: Geological Society of America Received: 04 Feb 2010 Revision Received: 17 Sep 2010 Accepted: 22 Sep 2010 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2011 Geological Society of America Geology (2011) 39 (2): 163–166. https://doi.org/10.1130/G31099.1 Article history Received: 04 Feb 2010 Revision Received: 17 Sep 2010 Accepted: 22 Sep 2010 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Peter J. Rose, David L. Fox, Jonathan Marcot, Catherine Badgley; Flat latitudinal gradient in Paleocene mammal richness suggests decoupling of climate and biodiversity. Geology 2011;; 39 (2): 163–166. doi: https://doi.org/10.1130/G31099.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Mammal faunas from western North America exhibit no significant change in species richness with latitude during the Torrejonian (ca. 63–60 Ma) and Tiffanian (ca. 60–58 Ma) North American Land Mammal Ages, in contrast to a strong richness gradient in modern mammalian faunas of the same region today. The latitudinal gradient in oxygen isotope composition of mammalian bioapatite from the Paleocene faunas is similar to that of modern meteoric and surface waters, suggesting that the temperature gradient in the Paleocene was similar to the modern one. The flat richness gradient in the middle Paleocene indicates either different responses to climatic gradients of faunas dominated by extinct clades of placental mammals or distinct ecological processes during the Paleocene diversification of mammals following the end-Cretaceous mass extinction. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.