Quantitative biogeography of late Maastrichtian planktic foraminifera

摘要

Upper Maastrichtian planktic foraminiferal faunas from 22 mainly Atlantic sections were analysed quantitatively, to document biogeographic patterns. Contour maps illustrate distribution patterns of 29 species. Quantitative results confirm the presence of an Austral Realm around Antarctica, a Transitional Realm in the northern North Atlantic and A Tethyan Realm. Variation in faunal composition between sections allows for subdivision of a wide Tethyan Realm into provinces that are at the scale of paleowatermasses.