Pyritized Pleuroceras Ammonite

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 This naturally pyritized Pleuroceras ammonite was collected in Germany and is roughly 185 million years old.

Despite its small size, the pyrite adds a noticeable weight to the specimen. 

This ammonite has been brushed to bring out a more brilliant golden shine from the natural, more dull color of the pyrite. 

 

Ammonites are extinct shelled cephalopods that are most closely related to today’s octopus, squid and cuttlefish. All lived in buoyant chambered shells, sealing off too-small chambers as they grew. They moved by expelling water to push themselves in the other direction.

Ammonites were both predator and prey. They ate plankton, crustaceans, and fish by quickly wrapping their tentacles around the animal. There is evidence of larger marine animals like mosasaurs eating ammonites.

There are over 10,000 species of ammonites. Some reached over 6 feet in diameter while others were just a few millimeters long. 

 

Type: Ammonite
Species: Pleuroceras sp.
Age: Jurassic / Pliensbachien (185 million years old) 
Locality: Buttenheim, Germany

 

Size: 1.25 x 1.13 x .44 inches
Weight: .45 oz.

 


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