Ammonite Fossil (Anetoceras) – Erfoud, Morocco – 2364g

A striking large Anetoceras ammonite fossil preserved in natural matrix, featuring a beautifully defined coiled shell with strong ribbing and excellent three-dimensional relief. The spiral form is bold and eye-catching, with deep, evenly spaced ridges that highlight the natural growth pattern of this ancient marine cephalopod.

This specimen displays a classic open coil structure typical of early ammonites, with a well-exposed whorl and natural coloration ranging from earthy tans to deeper brown tones. The contrast between the fossil and surrounding matrix enhances its visual impact, making it an exceptional display piece for collectors.

The size and presence of this ammonite make it especially desirable, offering both aesthetic appeal and strong geological significance. Anetoceras is an early ammonite genus that lived during the Devonian period, roughly 400 million years ago. These marine animals were part of a group of extinct cephalopods related to modern-day nautilus and squid.

Their shells grew in a coiled pattern as the animal matured, forming chambers used to regulate buoyancy in ancient seas. After death, the shell settled into sediment on the ocean floor, where it was gradually buried. Over millions of years, mineralization preserved the structure, resulting in fossils like this one.

Location: Erfoud, Morocco
Weight: 2364 grams
Measurements: 245mm x 147mm x 45mm