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Showing results for tags 'cerithium limestone'.
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Figured I would post a short trip report from yesterday the 27-05-2017. This trip went to the eastern coastline of Denmarks mainland, and the visible cliffs here consist of bryozoan chalk. There is however a layer of roughly 500mm that is composed of cerithium chalk, which is my primary focus since it is here snails, ammonites, crabs, isopods and other fossils not preserved (or rarely) elsewhere reside. During winter, alot of the hardened chalk and flint goes through a freeze-thaw process many times leaving the pieces split in half, often broken at the weakest point witch is usually were the fossils are. During summer the opposite happens with thermal expansion, ultimately achieving the same result. Anyways here are some pictures of some of the finds Odontaspis? 12mm Bryozoan colony 70x80mm unknown snail 19mm,possibly Metacerithium balticum which the layer is called after but the preservation is not good enough Leptomaria sp. 35mm un-named snail 24mm
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