نتایج جستجو برای: mass extinction

تعداد نتایج: 500636  

Journal: :iranian journal of science and technology (sciences) 2009
m. r. vaziri

a detailed study of ostracoda changes against the stable isotopes of carbon and oxygen acrossthe cenomanian-turonian boundary mass extinction has been fully documented in one section, the south ofengland. this section comprises the uppermost cenomanian to lowermost turonian strata. the comparisonbetween the results obtained in this research and two rival models for the cenomanian-turonian bound...

Journal: :Conservation Biology 2008

Journal: :Science 2009
Arnold I Miller Michael Foote

Environmental perturbations during mass extinctions were likely manifested differently in epicontinental seas than in open-ocean-facing habitats of comparable depth. Here, we present a dissection of origination and extinction in epicontinental seas versus open-ocean-facing coastal regions in the Permian through Cretaceous periods, an interval through which both settings are well represented in ...

Journal: :Proceedings of the National Academy of Sciences 2016

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