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. 2014 Nov 22;281(1795):20141533. doi: 10.1098/rspb.2014.1533

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© 2014 The Author(s) Published by the Royal Society. All rights reserved.

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Figure 3. — Hurlbert bathymetric breadth of Eocene species (black circles) on average declines towards offshore, whereas Hurlbert breadth of Plio-Pleistocene species (grey circles) changes weakly. Hurlbert breadth of offshore species is significantly higher in the Plio-Pleistocene than in the Eocene. Species richness (rarefied to 2477 individuals per habitat) increases towards inner shelf at both time intervals and this increase is less steep during the Plio-Pleistocene (grey squares) than during the Eocene (black squares).