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1.85" Pyritized Jurassic Ammonite (Amaltheus) Fossil - France
This is a fossil ammonite of the genus/species Amaltheus margaritatus, collected from a Jurassic - Pliensbachian-aged deposit in Aveyron, France. It comes from the Domerian substage, making the fossil approximately 186 to 182 million years old. The ammonite measures 1.85" wide and shows exceptional pyrite replacement. It was removed from the rock prior to preparation, and has since been mounted back to the rock it was found in.
Comes with an acrylic display stand.
Comes with an acrylic 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.
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.
SPECIES
Amaltheus margaritatus
LOCATION
Aveyron, France
SIZE
Ammonite: 1.85" wide, Rock: 3.3 x 2.7"
CATEGORY
SUB CATEGORY
ITEM
#367612
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