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fugichnia


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The so-called ‘escape structures’ that mark the response of animals to changes in the rate of deposition or erosion or to predation. The original trace (see trace fossil) may be regarded as a permanent dwelling structure, but the presence of fine, crescentic laminae (spreiten) indicates that the organism made efforts to escape burial or exposure. Thus the presence of spreiten implies fugichnia.

Subjects: Earth Sciences and Geography.


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