Thomas M. Cronin
J. Rodriquez-Lazaro
Alec R. Brenner
Lauren H. DeNinno
2015
<p><span>An early to middle Pleistocene ostracode fauna was discovered in sediment core P1-93-AR-23 (P23, 76.95°N, 155.07°W) from 951 meter water depth from the Northwind Ridge, western Arctic Ocean. Piston core P23 yielded more than 30,000 specimens and a total of about 30 species. Several early to mid-Pleistocene species in the genera </span><i>Krithe</i><span>,</span><i>Echinocythereis</i><span>, </span><i>Pterygocythereis</i><span>, and </span><i>Arcacythere</i><span> are now extinct in the Arctic and show taxonomic affinities to North Atlantic Ocean species. Our results suggest that there was a major ostracode faunal turnover during the global climate transitions known as the Mid-Pleistocene Transition (MPT, ~ 1.2 to 0.7 Ma) and the Mid-Brunhes Event (MBE, ~ 400 ka) reflecting the development of perennial sea ice during interglacial periods and large ice shelves during glacial periods over the last 400,000 years.</span></p>
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10.1016/j.palaeo.2014.07.026
en
Elsevier
An early to mid-Pleistocene deep Arctic Ocean ostracode fauna with North Atlantic affinities
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