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Hello, I have found a site with wrapped fossil cretaceous leaves. The are in a silty-sandy bed several cm thick, extenting for several meters in strike. In some parts, the leaves are flat lying in the bedding plane (as expected), in some parts they are wrapped. That means, they are regularly bend (no kinks) up to about 90° (or even more?). In that way, they partly truncate the general bedding or, in other words, that part of the sediment containing the wrapped leaves is not well layered, more massive. Has anybody encountered that kind of wrapped leaf preservation also? Does anybody know any literature about this subject? Well, these leaves are supposed to be Credneria, which is somewhat notorious for enrolled preservation! German Wikipedia gives the following explanation (g. translation): "In addition, the leaves from the Blankenburg quarry are usually rolled up at the edge or completely like a bag. This led to the assumption that they were twisted by drying out and were thus embedded in sand dunes." The environment "my" leaves are found in are not dune sands, judging from published data and own observations. Thank you very much for your help! Franz Bernhard
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- wrapped fossil leaves
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Credneria zenkeri var. acuminata (Hampe in Stehle 1857)
Ludwigia posted a gallery image in Member Collections
From the album: Plantae
5cm. From the Late Cretaceous Heimburg-Formation, Santonian at Blankenburg, Sachsen-Anhalt. A leaf from one of the very first deciduous genera.-
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