Portal de Periódicos da CAPES

Depressed rates of origination and extinction during the late Paleozoic ice age: A new state for the global marine ecosystem

2003; Geological Society of America; Volume: 31; Issue: 10 Linguagem: Inglês

10.1130/g19654r.1

1943-2682

Steven M. Stanley, Matthew G. Powell,

Marine Biology and Ecology Research

Research Article| October 01, 2003 Depressed rates of origination and extinction during the late Paleozoic ice age: A new state for the global marine ecosystem Steven M. Stanley; Steven M. Stanley 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 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 Steven M. Stanley 1Morton K. Blaustein Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA 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: 06 Mar 2003 Revision Received: 27 Jun 2003 Accepted: 05 Jul 2003 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (10): 877–880. https://doi.org/10.1130/G19654R.1 Article history Received: 06 Mar 2003 Revision Received: 27 Jun 2003 Accepted: 05 Jul 2003 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Steven M. Stanley, Matthew G. Powell; Depressed rates of origination and extinction during the late Paleozoic ice age: A new state for the global marine ecosystem. Geology 2003;; 31 (10): 877–880. doi: https://doi.org/10.1130/G19654R.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 animal genera dropped to low levels in latest Mississippian time, immediately after massive glaciers formed in the Southern Hemisphere and a second-order mass extinction occurred. Evolutionary turnover and diversity remained low for ∼50 m.y., shifting markedly upward precisely when extensive glaciation ended in Early Permian time. All diverse taxa with good fossil records experienced low rates of origination and extinction during this major ice age. Such sluggish rates would be predicted for faunas of shallow seas on or adjacent to a heavily glaciated supercontinent such as Pangea, where cool and highly seasonal thermal regimes should dictate that species have broad ecological niches, widespread geographic distributions, and large and relatively stable populations. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.