5.8" Triassic Ammonite (Ceratites nodosus) Fossil - Germany

This is a 5.8" wide specimen of a Middle Triassic ammonite (Ceratites nodosus). It comes from the the Muschelkalk Formation in Germany. It was found inside of a hard concretion and has been nicely prepared with a portion of rock remaining, acting as a display base.

There is restoration along the edge (opening end) where the shell broke away during collection.

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.
FOR SALE
$395
DETAILS
SPECIES
Ceratites nodosus
LOCATION
Lindbach, Bavaria, Germany
FORMATION
Muschelkalk Formation
SIZE
Ammonite 5.8" across
ITEM
#240840
GUARANTEE
We guarantee the authenticity of all of our specimens.