3.3" Fossil Ammonite (Placenticeras) - Utah

This is a beautiful 3.3" fossil ammonite (Placenticeras) from the Tropic Shale Formation near Orderville, Utah. The intricate suture pattern of the inner shell stands out nicely in this specimen. It is still attached on one side to the rock in which it was found.

Comes with an acrylic 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.
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DETAILS
SPECIES
Placenticeras cumminsi
LOCATION
Orderville, Utah
FORMATION
Tropic Shale
SIZE
3.3" Ammonite, 3.5" wide with rock
CATEGORY
ITEM
#119424
GUARANTEE
We guarantee the authenticity of all of our specimens.