2 1/4" Perisphinctes Ammonites Fossils - Madagascar

These are Upper Jurassic (160 million year old) ammonite fossils of the genus Perisphinctes collected near Sakaraha, Madagascar. The photos are representative of the ones you will receive though they are not the exact ones. They are approximately 2 1/4" across, some slightly larger, some slightly smaller.

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.

$7 $5.75

Quantity Discounts

3 to 9 Pieces

$5 $4.25

10+ Pieces

$4 $3.75

FOSSIL TYPE

Ammonites

SPECIES

Perisphinctes

AGE

Late Jurassic (160 Million Years)