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Vertebrate Zoology 59(2): 179-189
doi:
10.3897/vz.59.e30976
Published:
11 Dec 2009
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Authors
Bernd Nicolai 
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Halberstadt, Germany
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Naturkundemuseum Erfurt, Erfurt, Germany
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Conflict of interest
The authors have declared that no competing interests exist.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.