21663 - Great Collection of 25 Cretaceous Pyritized Ammonites Unidentified Trilobites Environments: offshore

Environments: offshore

suggests that it belonged to the Elosuchus genus

which is usually the only thing that is preserved

South Africa (15)

The total mass of meteorite pieces recovered from the bottom of Chebarkul lake was therefore ~640 kg

21663 - Great Collection of 25 Cretaceous Pyritized Ammonites Unidentified Trilobites Environments: offshorePrecious lot of pyritized ammonites! Different species present! It is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.