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Climatic basis for sluggish macroevolution during the late Paleozoic ice age

2005; Geological Society of America; Volume: 33; Issue: 5 Linguagem: Inglês

10.1130/g21155.1

1943-2682

Matthew G. Powell,

Marine and coastal plant biology

Research Article| May 01, 2005 Climatic basis for sluggish macroevolution during the late Paleozoic ice age Matthew G. Powell Matthew G. Powell 1Morton K. Blaustein Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Matthew G. Powell 1Morton K. Blaustein Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA Publisher: Geological Society of America Received: 03 Sep 2004 Revision Received: 03 Jan 2005 Accepted: 05 Jan 2005 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (5): 381–384. https://doi.org/10.1130/G21155.1 Article history Received: 03 Sep 2004 Revision Received: 03 Jan 2005 Accepted: 05 Jan 2005 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Matthew G. Powell; Climatic basis for sluggish macroevolution during the late Paleozoic ice age. Geology 2005;; 33 (5): 381–384. doi: https://doi.org/10.1130/G21155.1 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 Rates of origination and extinction for marine invertebrates fell at the onset of the late Paleozoic ice age in late Mississippian time and remained low until glaciation ended in middle Permian time. Through the use of a database of stratigraphic and geographic occurrences of brachiopod genera, these macroevolutionary changes are traced to the loss of genera with narrow latitudinal ranges, which had intrinsically high turnover rates, at the onset of glaciation in late Viséan time. When glaciation waned in late Sakmarian time, narrowly distributed genera rebounded abruptly and restored the global fauna to its pre– ice-age configuration. Because narrowly distributed brachiopod genera had dominated tropical diversity, the major biotic effects of the late Paleozoic ice age were felt at low latitudes. The climatic regime of this ice age thus altered the marine ecosystem to one characterized by broadly adapted, long-lived genera. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.