The beauty of shells
Belemnites are the backbone for the reconstruction of Jurassic-Cretaceous seawater properties like temperature. Here you see an image of a thin section of such an belemnite (Gonioteuthis, Upper Cretaceous, NW-Germany) under crossed polarizers. Clearly one can recognize the calcite fibre-bundles the belemnite is made of.
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6147 × 7412 px;
image/jpeg; 21.1 MB
Taken on 9
February
2018
Submitted on Feb. 9, 2018
Licence
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
Credit
Rene Hoffmann (distributed via imaggeo.egu.eu)
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