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9.2" Fossil Ammonite Cluster - Posidonia Shale, Germany
This is an impressive 9.2" wide cluster of Dactylioceras ammonites from the Posidonia Shale of Germany. These early Jurassic ammonites were naturally compressed within the shale and preserved on sleek, black slate, with patches of fine pyritization highlighting their ribbed shells.
An acrylic display stand is included.
An acrylic display stand is included.
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
Dactylioceras sp.
LOCATION
Holzmaden, Germany
FORMATION
Posidonia Shale
SIZE
Rock 9.2 x 4.8", Largest Ammonite 1.8"
CATEGORY
SUB CATEGORY
ITEM
#343458
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