Iridescent Cleoniceras Ammonite Fossil

Cleoniceras besaiei Ammonite

Class Cephalopoda, Subclass Ammonoidea, Order Ammonitida

Geological Time: Upper Early Cretaceous, Albian Stage

Size (25.4 mm = 1 inch): Ammonite is 65 mm in diameter

Fossil Site: Mahajanga Province, Madagascar

Code: AM051

Price: Sold


Description: This fine ammonite is Cleoniceras from Madagascar which has much of the original iridescent shell present. This is a consequence of light passing through the various layers of aragonite and conchiolin deposited by the ammonite in life. The lack of acidity in the depositional environment allowed them to be preserved as you see it here. Notice the play of colors when the viewer’s aspect changes. The background to this one is reddish, a most unusual coloration, and the only such example I have.

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