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2.1" Jurassic Ammonite (Microderoceras) - Charmouth, England
This is a 2.1" wide, calcite replaced ammonite (Microderoceras birchi) fossil from Charmouth England. There is a tiny specimen of the same species right next to it. They have been nicely prepared using mechanical tools to remove the surrounding limestone. The rock has been cut flat so that it stands up nicely without the need for a 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
Microderoceras birchi
LOCATION
Charmouth, Lyme Regis, Dorset, England
FORMATION
Upper Inferior Oolite
SIZE
2.1" wide, Rock 4.6 x 3.1 x 1.3"
CATEGORY
SUB CATEGORY
ITEM
#176355
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