Polished Cymatoceras Nautilus Ammonite Fossils x 12 From Maintirano, Madagascar

A NOTE FROM NICK
A large tray of 12 beautifully polished Cymatoceras Nautilus Ammonite Fossils. These typically date back to the Cretaceous period, roughly 120 million years ago, and they are much rarer than most Ammonites.

PRODUCT DESCRIPTION 
Cymatoceras Nautilus Ammonite Fossils
This ammonite Cymatoceras comes from the Maintirano, Madagascar, where deposits from the area have produced some of the finest known collection fossils. Typically dating back to the Cretaceous period, roughly 120 million years ago, it testifies to the biological richness of the tropical seas of the Cenomanian, a period marked by the greatest depth ever reached by the sea. The Cymatoceras is recognized by its massive and strongly ribbed shell. It is a nautiloids shape, approaching its current descendant: the nautilus. These are much rare than most Ammonites. 

ASSOCIATED MINERALS 
Aragonite, Calcite, Pyrite, Quartz

ASSOCIATED FEATURES 
Iridescent

ASSOCIATED COLOURS 
Brown, Red, White, Green 

MOHS HARDNESS SCALE
3.5 to 5 

PRODUCT DATA
Locality = Maintirano, Madagascar
Grade = Very Good to A Grade                      
Size = 48 - 85 mm