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- W230796695 abstract "Calcareous nannoplankton, a predominant group of skeletonized marine autotrophs, were decimated during the Cretaceous-Paleogene boundary mass extinction event, yet the cause of their extinction is poorly understood. Here, we analyze nannoplankton counts from seventeen Cretaceous-Paleogene boundary sections representing all of the major ocean basins. We use a combination of multivariate statistical and other ecological methods; in addition, orbital time control allows us to place estimate on the duration of the recovery. Our results reveal that the northern hemisphere oceans suffered high extinction rates and a nannoplankton crisis that peaked 40 kyr after the impact and lasted for 310 kyr. By contrast, the southern hemisphere oceans suffered lower extinction rates and experienced nearly immediate recovery of a normal nannoplankton population. Eight out of nine species that originated in the early Danian appeared first in the southern hemisphere and later in the northern hemisphere." @default.
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- W230796695 date "2010-04-01" @default.
- W230796695 modified "2023-09-26" @default.
- W230796695 title "Geographic and Ecologic Controls on the Extinction and Recovery of Nannoplankton at the Cretaceous-Tertiary Boundary" @default.
- W230796695 hasPublicationYear "2010" @default.
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