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3.6" Jurassic Ammonite (Asteroceras) Fossil - "Sunrise Over Dorset"
This is a beautifully preserved and uniquely prepared, 3.6" wide Asteroceras obtusum ammonite fossil from Dorset, England. The name "Sunrise Over Dorset" was bestowed upon this artistically prepared specimen. The rock the ammonite was found in has been completely removed from each side and shaped to resemble where the land meets the sea on Lyme Regis Beach. The base of the rock has been cut flat, creating an aesthetic display.
Because of the preparation, the translucence of the ammonite can be seen, especially when the ammonite is backlit. A photo of the ammonite backlit can be seen up above.
Because of the preparation, the translucence of the ammonite can be seen, especially when the ammonite is backlit. A photo of the ammonite backlit can be seen up above.
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.
$1,150
SPECIES
Asteroceras obtusum
LOCATION
Black Ven, Charmouth, Dorset, England
FORMATION
Lower Lias, Obtusum Zone
SIZE
Ammonite: 3.6" wide. Entire specimen: 9.65 x 7.8"
CATEGORY
SUB CATEGORY
ITEM
#316850
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