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Cabinet of Curiosities: Natural History, Entomology and Minerals / Exceptionnelle ammonite fossile dans son nodule (positif et négatif) Exceptional Fossil Ammonite in Nodule--Positive/Negative

Lot 46
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Exceptionnelle ammonite fossile dans son nodule (positif et négatif)

Exceptional Fossil Ammonite in Nodule--Positive/Negative
21 September 2022, 14:00 CEST
Paris

€6,000 - €8,000

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Exceptionnelle ammonite fossile dans son nodule (positif et négatif)

Exceptional Fossil Ammonite in Nodule--Positive/Negative

Sphenodiscus sp.
Cretaceous
Pierre Shale, South Dakota, USA

Offered is a large polished Cretaceous ammonite in its original nodule matrix. The "positive" side exhibits exceptionally clear suture patterns, while the "negative" side displays the original impression of the pastel iridescent nacre. A stunning positive/negative display rarely seen in intact form. Each half measures 22 x 7 x 18 cm (2)

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