Reviews
4.45" Jurassic Ammonite (Stephanoceras) Fossil - France
This is a beautiful, 4.45" wide Stephanoceras ammonite fossil from Fresney, France. The ammonite is fully inflated with very nice surface detail including the distinctive ridges and nodes with no crushing. The genus Stephanoceras is commonly used as an index fossil to help identify the Bajocian Stage of the Middle Jurassic, approximately 167-170 million years old.
Most of the rock has been removed from this Jurassic-aged ammonite, with a portion of rock remaining along one edge for presentation purposes. Although the rock has been cut flat, an acrylic display stand will accompany the specimen to assist with presenation.
Most of the rock has been removed from this Jurassic-aged ammonite, with a portion of rock remaining along one edge for presentation purposes. Although the rock has been cut flat, an acrylic display stand will accompany the specimen to assist with presenation.
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.
$195
SPECIES
Stephanoceras sp.
LOCATION
Fresney, France
SIZE
Ammonite: 4.45" wide, Entire specimen: 4.3 x 3.9"
CATEGORY
SUB CATEGORY
ITEM
#279311
We guarantee the authenticity of all of our specimens.
