Rare Coeloceras peltos Fossil Ammonite Lower Toarcian Jurassic Mende France Genuine

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Rare Coeloceras peltos Fossil Ammonite Lower Toarcian Jurassic Mende France Genuine

Rare Coeloceras peltos Fossil Ammonite Lower Toarcian Jurassic Mende France with Certificate of Authenticity

Long Description

Rare Coeloceras peltos Fossil Ammonite from France

Presented here is a rare Coeloceras peltos fossil ammonite, an extraordinary specimen from the Lower Toarcian Stage of the Early Jurassic, found in the renowned fossil-rich region of Mende, France. Fossils from this locality are celebrated for their fine preservation, and this ammonite represents a unique window into marine life from over 182 million years ago. As with all our specimens, this fossil is 100% genuine and comes complete with a Certificate of Authenticity. The photographs provided show the exact ammonite you will receive, including a 1 cm scale cube for accurate size reference.

Geological Age and Formation

This ammonite dates to the Lower Toarcian Stage of the Early Jurassic, approximately 182 million years ago. The Toarcian is one of the most studied intervals of the Jurassic due to the Toarcian Oceanic Anoxic Event, which created widespread conditions of low oxygen in the seas. These unique depositional environments allowed for the preservation of marine life in fine detail, making this ammonite an excellent example of paleontological heritage from this important geological stage.

The fossil was collected near Mende, in the Lozère department of southern France, an area historically noted for its marine deposits from the Jurassic period. These deposits belonged to the ancient Tethys Ocean, a warm shallow sea that was home to diverse ammonite faunas and a thriving marine ecosystem.

Scientific Classification

• Genus/Species: Coeloceras peltos
• Family: Dactylioceratidae
• Superfamily: Dactylioceratoidea
• Order: Ammonitida
• Class: Cephalopoda
• Age: Lower Toarcian, Early Jurassic (~182 million years old)
• Provenance: Mende, France

Morphological Features

Coeloceras peltos is easily recognised by its evolute shell, where all whorls are clearly visible, giving the fossil a striking spiral appearance. The ribs are generally strong and regular, radiating outward across the shell and often curving gently towards the venter (outer edge). This ribbing not only makes the specimen aesthetically appealing but also provides paleontologists with diagnostic features for identification.

The whorls of Coeloceras tend to be compressed with a deep umbilicus, offering insight into its evolutionary adaptations. The detailed ribbing and shell form are characteristic of ammonites that thrived as nektonic predators, capable of swimming actively through the ancient seas.

Paleoenvironment and Ecology

During the Early Jurassic, the region now known as southern France was covered by the Tethys Ocean, a shallow marine environment rich in biodiversity. Ammonites such as Coeloceras peltos played a central role in this ecosystem, serving as active hunters while also being prey for larger marine reptiles such as ichthyosaurs and plesiosaurs.

The ammonite’s chambered shell functioned as a buoyancy device, allowing it to regulate depth and maintain mobility in the open water. Its streamlined, ribbed shell provided both hydrodynamic efficiency and structural strength.

Collectability and Value

This rare Coeloceras peltos ammonite is an outstanding piece for collectors due to its provenance, rarity, and distinct morphology. Its preservation captures the fine detail of Jurassic life and makes it a centerpiece for both private collections and educational displays.

• Type: Rare Fossil Ammonite – Coeloceras peltos
• Age: Lower Toarcian, Early Jurassic (~182 million years old)
• Location: Mende, France
• Scale Reference: 1 cm cube shown in photographs
• Authenticity: 100% genuine, Certificate of Authenticity included
• Specimen Guarantee: You will receive the exact fossil shown in the photographs

This ammonite stands as both a scientifically significant specimen and a visually striking natural treasure from the Jurassic seas of France.