Abstract
Phosphatized sclerites of Chancelloria and Allonnia are described from the Henson Gletscher Formation (Cambrian, Miaolingian Series, Wuliuan Stage) of North Greenland and the lower Cambrian of Siberia. They preserve diagenetic, unusually large, elongate crystals within the internal cavity (lumen) that maintain the imbricate lamellar structure of the original microstructure of the aragonitic sclerite wall. John S. Peel [john.peel@pal.uu.se], Department of Earth Sciences (Palaeobiology), Uppsala University, Villavägen 16, SE-75236, Uppsala, Sweden; Artem Kouchinsky [artem.kouchinsky@gmail.com], Department of Paleobiology, Swedish Museum of Natural History, Box 50007, SE-10405, Stockholm, Sweden.
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