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19.2" Polished Ammonite, Clam, and Nautilus Cluster - Madagascar
Here is a large cluster of polished ammonites still embedded in the rock in which they were found. The entire specimen measures 19.2 x 14.5 x 12", it weighs 103 lbs, and the large center ammonite measures 9.3" wide. Many other fossils including clams, cephalopods, ammonites, and a nautilus have been exposed from the rock. This specimen sits up nicely along one edge, or can be laid on its side for presentation.
The ammonites are Cretaceous (Albian Stage) in age, or approximately 110 million years old and are quarried in the Mahajanga Province of Madagascar.
The ammonites are Cretaceous (Albian Stage) in age, or approximately 110 million years old and are quarried in the Mahajanga Province of Madagascar.
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
Various
LOCATION
Ambatolafia, Mahajanga Province, Madagascar
SIZE
Largest Ammonite: 9.3" wide, Entire Specimen: 19.2 x 14.5 x 12", Weight: 103 lbs
CATEGORY
SUB CATEGORY
ITEM
#236972
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