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Kosmoceras (gulielmiceras) jason

Kosmoceras (gulielmiceras) jason

SKU: CAL 4.1A
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An exceptionally fine, wholly septate adult internal mould, fully developed on both sides showing the fine ribbing and sutures in excellent detail. The umbilical seam uncoils over the last 1/4 whorl and an adnate serpulid is present. From Wurttemberg Germany.

Size: 55 mm