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Penguin response to the Eocene climate and ecosystem change in the northern Antarctic Peninsula region

Authors
Publisher
Elsevier B.V.
Publication Date
Volume
4
Issue
2
Identifiers
DOI: 10.1016/j.polar.2010.03.001
Keywords
  • West Antarctica
  • Seymour Island
  • La Meseta Formation (Eocene)
  • Environmental Change
  • Penguins
Disciplines
  • Chemistry

Abstract

Abstract Eocene Antarctic penguins are known solely from the La Meseta Formation (Seymour Island, James Ross Basin). They are most numerous and taxonomically diverse (at least ten species present) within strata formed at the end of this epoch, which is concomitant with a significant cooling trend and biotic turnover prior to the onset of glaciation. Moreover, all newly appeared taxa were small-bodied, and most probably evolved in situ. Interestingly, some chemical proxies suggest enhanced nutrient upwelling events that coincided with obvious changes in the record of La Meseta penguins.

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