Discoscaphites conradi

64,00 €
SKU: FA113
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Ammonite (microconcha) perfect, pearly color given by the fossilization of the shell, about ± 5.3 cm × 4.4 cm. Behind it has another species (Sphenodiscus) without cleaning. The piece measures ± 13 cms × ± 9 cms.

"In the ammonites, the size of the macrochate of a given species (supposedly female dimorph) could be up to 10 times larger than its corresponding microconcha (supposedly male dimorph).





Upper Cretaceous, Fox Hills Formation






South Dakota (USA)