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Aspects of diagensis associated with Bathichnus paramoudrae in a Belemnitella langei zone, Upper Campanian chalk at Kronsmoor, Holstein, Germany. A: the burrow is represented by a slender pyrite tube, outside which is a narrow zone of white chalk. Beyond this the chalk is tinted grey (black when fresh) by finely divided pyrite. The burrow passes through a small concretion of pyrite. Scale-bar: 1 cm. B: three pyrite concretions from the same situation as in A. The burrow is largely enveloped by the elongated nodule while it runs within a furrow in the two rounded ones. Scale-bar: 1 cm. C and D: transverse sections fo the burrow itself. The outer grey ring is tinted dark green with glauconite; the inner limit is seen to be sharper than the outer. Within this is white chalk containing more-or-less centrally a complex burrow fill of grey chalk: in these cases a pale grey fill lies within a darker grey one. In D there is a partial development of a pyrite tube (black) around the grey fill. Scale-bar: 5 mm. E: longitudinal slice of a similarly preserved burrow to C and D. The green tube here is rather faint, while the chalk within it is distinctly whiter than the pyrite-stained chalk outside it. Centrally lies the complex grey chalk fill. Scale-bar: 1 cm. <@|{|{<< Article and unique photos about Paramoudras, Flint Circles and Flint Backbones on Beeston Bump Beach can be found at >}}}#;> http://www.geulogy.everythingiselectric.com/norfolk/beestonbump/introdis-beestonbump.html ~~%~~~~~/\~~ Photo and text credit Bromley, Schulz & Peake 1975