Long-term origination rates are reset only at mass extinctions

Research Article| August 01, 2012 Long-term origination rates are reset only at mass extinctions Andrew Z. Krug; Andrew Z. Krug Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, Illinois 60637, USA Search for other works by this author on: GSW Google Scholar David Jablonski David Jablonski Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, Illinois 60637, USA Search for other works by this author on: GSW Google Scholar Geology (2012) 40 (8): 731–734. https://doi.org/10.1130/G33091.1 Article history received: 05 Dec 2011 rev-recd: 28 Feb 2012 accepted: 05 Mar 2012 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 Andrew Z. Krug, David Jablonski; Long-term origination rates are reset only at mass extinctions. Geology 2012;; 40 (8): 731–734. doi: https://doi.org/10.1130/G33091.1 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 Diversification during recovery intervals is rapid relative to background rates, but the impact of recovery dynamics on long-term evolutionary patterns is poorly understood. The age distributions for cohorts of marine bivalves show that intrinsic origination rates tend to remain constant, shifting only during intervals of high biotic turnover, particularly mass extinction events. Genera originating in high-turnover intervals have longer stratigraphic durations than genera arising at other intervals, and drive the magnitude of the shift following the Cretaceous–Paleogene (K-Pg) extinction. Species richness and geographic range promote survivorship and potentially control rates through ecospace utilization, and both richness and range have been observed to expand more rapidly in recovery versus background states. Post-Paleozoic origination rates, then, are directly tied to recovery dynamics following each mass extinction event. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.