Polished Douvilleceras Ammonite

This fossilised ammonite shell belonged to Douvilleiceras, a distinctive genus of marine cephalopods from the Early Cretaceous period, approximately 110 million years ago. Displayed in a museum quality glass dome bell jar, the specimen features bold ribbing and pronounced tubercles, giving it a sculptural, almost armoured appearance.

Unlike the smooth, symmetrical forms of later ammonites, Douvilleiceras is known for its heavily ornamented shell, an evolutionary response to increased predation in Cretaceous seas. Its coiled structure housed a buoyant internal chamber system, allowing it to float and move through the water using jet propulsion.

Sourced from fossil beds in Madagascar, this ammonite has been expertly prepared to reveal the dramatic texture and natural mineralisation of its shell. A compelling piece that combines ancient biology with striking visual presence.

Base: Solid wood hand finished in our studio
Mount: Stainless Steel
Dome: Handblown 2mm tempered glass
Dimensions: 100x100mm

The picture shown is an example of the quality that you can expect to receive. Please be aware that, as these are natural products, they are subject to some variation.

Name: Douvilleiceras Ammonite
Age: 110 Million Years Old
Location: Madagascar, Africa

Douvilleiceras is known for its thick, robust shell with strong ribbing and prominent tubercles, features that likely served as protection against predators in increasingly competitive marine environments. Unlike the more streamlined ammonites of later periods, its heavily ornamented form suggests a slower-moving lifestyle within the warm, shallow seas of the Cretaceous.

Fossils from Madagascar are especially prized for their preservation and natural mineralisation. This specimen showcases the dramatic shell architecture characteristic of Douvilleiceras, offering a bold and tactile glimpse into the defensive evolution of ancient marine life.

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