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15.4" Sliced Speetoniceras Ammonite With Druzy Pyrite
This is a large, 15.4" wide Speetoniceras ammonite fossil from the Lower Cretaceous deposits of the Volga River in Russia. It has been sliced in half, and polished revealing the inner chamber structure. The chambers are filled with deep pockets of druzy pyrite crystals. The outer side of the ammonite has been nicely prepared to expose the well defined external structure. This is a gorgeous display piece.
There has been some restoration and repair to the ammonite. Several cracks have been repaired and filled on the backside and it's likely some of the pyrite has been added.
There has been some restoration and repair to the ammonite. Several cracks have been repaired and filled on the backside and it's likely some of the pyrite has been added.
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
Speetoniceras versicolor
LOCATION
Volga river, Ulyanovsk region, Russia
SIZE
15.4" wide
CATEGORY
SUB CATEGORY
ITEM
#37862
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