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Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
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Volume 17, issue 2
J. Micropalaeontol., 17, 179–182, 1998
https://doi.org/10.1144/jm.17.2.179
© Author(s) 1998. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Micropalaeontol., 17, 179–182, 1998
https://doi.org/10.1144/jm.17.2.179
© Author(s) 1998. This work is distributed under
the Creative Commons Attribution 4.0 License.

  01 Dec 1998

01 Dec 1998

Fossil glochidia (Bivalvia, Unionidae): identification and value in palaeoenvironmental reconstructions

David C. Aldridge and David C. Horne David C. Aldridge and David C. Horne
  • Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK

Abstract. Preserved valves of fossil glochidia have been recovered from Holocene lake marls at Quidenham Mere, UK. Detailed morphological comparisons with glochidia removed from live adult unionids have enabled confident identification of the fossil glochidia as those of Anodonta anatina. Fossil glochidia are potentially powerful tools in the interpretation of palaeoenvironments. Different species of freshwater mussels are known to release glochidia at different times of the year and, therefore, the occurrence of fossil glochidia can provide information on the season during which sediments accumulated. Furthermore, glochidia can provide information on the presence of certain fish species and on water depth.

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