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2.3" Polished Agatized/Pyritized Ammonite Fossil Slab - Germany
This is a polished slab from the Holzbachacker clay pit that contains both agatized and pyritized ammonite (Pleuroceras spinatum) fossil segments. It's Jurassic, Pliensbachian stage or approximately 190 million years old. One side of this slab has been left unpolished, revealing the pyrite formations and a small bivalve.
This specimen stands nicely on its own.
This specimen stands nicely on its own.
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.
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.
SPECIES
Pleuroceras spinatum
LOCATION
Buttenheim, Bavaria/Germany
FORMATION
Holzbachacker Clay-Pit
SIZE
2.3 x 1.8"
CATEGORY
SUB CATEGORY
ITEM
#125416
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