6.8" Golden Calcite Ammonite (Promicroceras) Cluster - England

This is a 6.8" wide section of limestone covered with small, golden calcite replaced fossil ammonites (Promicroceras planicosta). The hard rock was painstakingly remove using mechanical tools to expose the ammonite fossil and bring them out in high relief.

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.
What an ammonite would have looked like while alive.
FOR SALE
$995
DETAILS
SPECIES
Promicroceras planicosta
LOCATION
Lyme Regis, Dorset, England
FORMATION
Obtusum Zone
SIZE
Rock 6.8 x 4.15 x 1.5", Largest ammonite .7" wide
ITEM
#242419
GUARANTEE
We guarantee the authenticity of all of our specimens.