This Ammonite Fossil is a half piece only. It measures approx. 147 x 121 mm: thickness is 13 mm: weight is 334 grams.
 
Ammonites were Marine animals that belonged to the Cephalopods. They had coils shells like the nautilus. They appeared 425 million years ago and were common in the oceans when the dinosaurs were alive. They went extinct some 66 million years ago