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Beautiful, 2.85" Ammonite (Arnioceras) Fossil - England
This is a 2.85" wide, Lower Jurassic ammonite (Arnioceras semicostoides), collected from the Semicostatum Zone of the Lower Lias stratigraphic layer in Dorset, England. There is one extremely well-preserved ammonite on the specimen which was expertly prepared from the hard limestone.
It comes with an acrylic display stand.
It 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.
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
Arnioceras semicostoides
LOCATION
Lyme Regis, Charmouth, Dorset, England
FORMATION
Lower Lias, Semicostatum Zone
SIZE
Ammonite: 2.85" wide, Entire specimen: 6.7 x 5.1"
CATEGORY
SUB CATEGORY
ITEM
#240738
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