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Exceptionally preserved lacustrine ostracods from the Middle Miocene of Antarctica : implications for high-latitude palaeoenvironment at 77 degrees south

Williams, Mark; Siveter, David J.; Ashworth, Allan C.; Wilby, Philip; Horne, David J.; Lewis, Adam R.; Marchant, David R.. 2008 Exceptionally preserved lacustrine ostracods from the Middle Miocene of Antarctica : implications for high-latitude palaeoenvironment at 77 degrees south. Proceedings of the Royal Society of London. Part B, Biological Sciences, 275 (1650). 2449-2454. 10.1098/rspb.2008.0396

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Abstract/Summary

A newly discovered Konservat-Lagerstätte from the Middle Miocene of the western Olympus Range, Dry Valleys, Antarctica, yields cypridoidean ostracods complete with preserved body and appendages. This is the first record of three-dimensionally fossilized animal soft tissues from the continent. The ostracods are preserved in goethite, secondary after pyrite, representing a novel mode of exceptional preservation. They signal a high-latitude (greater than 77°south) lake setting (Palaeolake Boreas) viable for benthic animal colonization prior to 14Myr ago. Their presence supports the notion of warmer, tundra-like environmental conditions persisting in the Dry Valleys until the Middle Miocene.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1098/rspb.2008.0396
Programmes: BGS Programmes 2008 > International Business Development
Additional Keywords: Middle Miocene, Ostracoda
NORA Subject Terms: Earth Sciences
Date made live: 13 Jan 2009 12:19
URI: http://nora.nerc.ac.uk/id/eprint/5606

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