1.3" Pyritized (Pleuroceras) Ammonite & Bivalve Fossil - Germany

This is a beautifully pyritized Pleuroceras ammonite fossil, collected near Forcheim, Germany. It's Jurassic, Pliensbachian stage or approximately 185 million years old. You can feel the heft of the iron pyrite in the specimen when you hold it in your hand. In addition to the ammonite, the rock also contains a bivalve fossil.

Please note that the ammonite has been brushed with a wire brush to give it a more golden brilliant shine. Despite being pyritized their natural color when found is much duller.

About Ammonites

Ammonites were ancient marine cephalopods, similar to today's squids and octopuses, but with a defining feature: their distinctive, tightly coiled spiral shells. These shells, resembling those of modern nautiluses, served as both a protective home and a buoyancy aid, allowing ammonites to navigate the prehistoric seas with ease. First emerging around 240 million years ago in the Triassic Period, ammonites thrived for over 175 million years, adapting through numerous forms and sizes. As predatory creatures, they likely fed on smaller marine organisms, using their tentacles to capture prey. However, their long reign came to an end 65 million years ago at the close of the Cretaceous, coinciding with the mass extinction event that also eliminated the dinosaurs.

What an ammonite would have looked like while alive.
What an ammonite would have looked like while alive.



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DETAILS
SPECIES
Pleuroceras sp.
LOCATION
Forcheim, Germany
SIZE
Ammonite: 1.3" wide. Entire specimen: 1.8 x 1.3"
ITEM
#193814
GUARANTEE
We guarantee the authenticity of all of our specimens.