4.5" Polished Desmoceras Ammonite Fossil Half | 10.2 ounces

The Desmoceras ammonite is a fascinating fossilized relic from the Cretaceous period when marine creatures flourished approximately 100–120 million years ago. These marine creatures belonged to a group of mollusks called cephalopods, which are related to modern-day squid and octopuses.

Characterized by their smooth, coiled shells, Desmoceras ammonites exhibit intricate suture patterns where the inner walls of the shell join. These patterns make their fossils particularly captivating to collectors and enthusiasts. The shells often had a streamlined, symmetrical shape that aided their movement through the oceans.

Desmoceras ammonites inhabited warm, shallow seas, which were widespread during the Cretaceous period. Fossils of these creatures are found across the globe, with notable deposits in Madagascar, Morocco, and parts of Europe and Asia.

These ammonites moved through the water using jet propulsion, a method in which they expelled water through a funnel-like structure for mobility. This allowed them to navigate the seas efficiently, whether foraging or evading predators. They were likely opportunistic feeders, consuming a diet of small marine organisms such as plankton, crustaceans, and other tiny creatures floating in the water column.

A Desmoceras ammonite fossil offers a unique glimpse into ancient marine life. It showcases the remarkable beauty of its shells and the incredible diversity of life that existed millions of years ago. Whether displayed as a centerpiece or added to a fossil collection, these ammonites are a timeless reminder of Earth's prehistoric past.