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11.4" Large, Cut & Polished Ammonite Fossil - Very Large
This is a large, 11.4" wide, cut and polished Cleoniceras ammonite fossil from Ambatolafia, Madagascar. Formed during the Late Cretaceous (Albian Stage)—approximately 110 million years ago—it’s a remarkable snapshot of ancient marine life.
The interior reveals vibrant mineralization filling each chamber, beautifully contrasted by crisp white calcite septa. Highly polished to bring out its natural color and structure, this exotic ammonite makes an exceptional display piece with undeniable geological and historical charm.
Both polished halves are included and come with a pair of acrylic display stands for easy presentation. The very center of this ammonite is a composite from another specimen.
The interior reveals vibrant mineralization filling each chamber, beautifully contrasted by crisp white calcite septa. Highly polished to bring out its natural color and structure, this exotic ammonite makes an exceptional display piece with undeniable geological and historical charm.
Both polished halves are included and come with a pair of acrylic display stands for easy presentation. The very center of this ammonite is a composite from another specimen.
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.
$595
SPECIES
Cleoniceras sp.
LOCATION
Ambatolafia, Mahajanga Province, Madagascar
SIZE
11.4" wide (each half)
CATEGORY
SUB CATEGORY
ITEM
#342139
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