Large (8.9" Wide) Mantelliceras Ammonite

This is a large 9 inch in diameter ammonite of the genus Mantelliceras from Madagascar. This is not a type often seen for sale from this country. It's nearly 4 inches wide at it's widest point, very solid and weighs 10 pounds. It makes for a great display piece.

Mantelliceras a late Cretaceous ammonite characterized by a strongly ribbed, moderately involute shell with a moderately wide umbilicus, and rounded whorl section. It was collected in the Morondava Basin east of the town of Tulear.

Link to paper on these ammonites:
Mantelliceras dixoni
Morondava Basin, Madagascar
8.9" wide, 9 pounds
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