Chondroceras evolvescens Ammonite Fossil Bajocian Normandy France with COA

Description

Genuine Chondroceras evolvescens Ammonite Fossil

This listing is for the genuine ammonite fossil shown in the photographs, identified as Chondroceras evolvescens. It comes from Normandy in France and dates to the Bajocian Stage of the Middle Jurassic. The Bajocian spans approximately 170.3 to 168.3 million years ago, when marine environments covered significant parts of western Europe. This is an authentic fossil specimen, not a cast, replica, or modern reproduction, and the photographs show the exact piece that will be supplied.

Middle Jurassic Marine Geology

Ammonites were extinct marine cephalopods related to modern squid, cuttlefish, octopus, and nautilus. Their coiled shells were divided internally by septa into a succession of chambers. The living animal occupied the final body chamber, while earlier chambers formed part of a buoyancy system that helped control movement through the water. The meeting lines between the septa and shell wall created suture patterns that are useful in ammonite study. Because ammonites evolved rapidly and were distributed widely, their fossils are important index fossils for correlating and dating Jurassic marine rocks.

Chondroceras evolvescens Identification

The supplied identification for this specimen is Chondroceras evolvescens. Chondroceras is a recognised Bajocian ammonite genus known for strongly ornamented shells. Depending on preservation and growth stage, specimens may display coiled whorls, robust ribs, tubercles, shell profile, body chamber, sutural detail, internal mould, or mineral replacement. The species evolvescens is represented here by the exact fossil shown in the images. Please examine every photograph carefully because they display its individual morphology, condition, and natural surfaces.

Bajocian Normandy Provenance

Normandy contains important Jurassic sedimentary sequences deposited in ancient marine environments. Ammonite shells and other remains settled or were transported onto the seabed, where sediment buried them. Over millions of years the sediment compacted into rock, while mineral-rich water preserved or replaced original shell material. Later uplift and erosion exposed fossil-bearing layers again. Matrix, colour variation, exposed internal areas, incomplete edges, mineral veining, weathering, and small chips are natural parts of this specimen’s geological history rather than manufacturing defects.

Exact Fossil for Collection or Study

You will receive the exact Chondroceras evolvescens ammonite shown in the photographs, with no substitution. The first image is the main display view and the second provides another angle for assessing form, ornament, matrix, and preservation. Please refer to the photographs for full sizing and scale. This carefully chosen specimen is suitable for a Middle Jurassic ammonite collection, French fossil display, natural history cabinet, geology teaching set, scientific study resource, or distinctive gift for a collector, student, or fossil enthusiast. Its documented Bajocian age and Normandy provenance add valuable scientific and historical context.

Certificate of Authenticity

A generic Certificate of Authenticity is included with the fossil. It records the supplied identification, geological age, and locality information and carries our lifetime guarantee of authenticity. The specimen will be packed carefully and securely for dispatch. Every natural feature visible in the photographs belongs to the actual fossil you will receive. This genuine Chondroceras evolvescens ammonite provides an attractive and scientifically informative connection to the Middle Jurassic seas of France and to the evolutionary diversity of ammonites more than 168 million years ago.