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17.8" Plate of Jurassic Ammonite Fossils - Posidonia Shale, Germany
This is a 17.8" wide Harpoceras falcifer and Dactylioceras ammonite fossil association from the Posidonia Shale of Germany. Ammonites from this location have been compressed and are preserved on a black slate in a partially pyritized state.
The plate accompanied by a metal display stand.
The plate accompanied by a metal display stand.
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
Harpoceras falcifer & Dactylioceras sp.
LOCATION
Holzmaden, Germany
FORMATION
Posidonia Shale
SIZE
Largest Ammonite: 10" wide, Rock: 17.8 x 17.75"
CATEGORY
SUB CATEGORY
ITEM
#301487
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