Juvenile Hoplitids Ammonite Fossil Rare Middle Albian Cretaceous Aube France COA

Description

Rare Juvenile Hoplitids Ammonite Fossil from France

This listing presents a rare Juvenile Hoplitids ammonite fossil originating from the Middle Albian Stage of the Early Cretaceous, discovered in Aube, France. At approximately 107–105 million years old, this ammonite represents a unique glimpse into the early development stages of one of the most important ammonite families of the Albian seas. The specimen offered here is a genuine fossil, supplied with a Certificate of Authenticity. The photographs provided show the actual piece for sale, and a 1 cm scale cube is included in the images for precise size reference.

Geological Context: Middle Albian, Early Cretaceous

The Albian Stage (113–100 million years ago) was marked by widespread marine transgressions across Europe, with shallow seas covering vast regions and depositing fossil-rich sediments. The Middle Albian in particular is a crucial subdivision, as it provides detailed insights into ammonite evolution and global biostratigraphy.

The Aube region in France is internationally recognised for its rich ammonite-bearing strata, where members of the Hoplitidae family are frequently recovered. These deposits, composed primarily of clays and marls, offered excellent conditions for fossil preservation. The ammonites found here are highly valuable to paleontologists, as they serve as index fossils, helping to date and correlate Albian strata across Europe and beyond.

Scientific Classification

• Fossil Type: Ammonite
• Order: Ammonitida
• Superfamily: Hoplitaceae
• Family: Hoplitidae
• Geological Age: Middle Albian, Early Cretaceous (~107–105 million years ago)
• Locality: Aube, France

Morphological Features of Juvenile Hoplitids

This specimen is particularly special as it represents a juvenile stage of the Hoplitidae, offering insight into the early growth and shell development of these ammonites. Key features include:

• Small, evolute shell with all earlier whorls visible.
• Strong, evenly spaced ribbing across the flanks, characteristic of hoplitid morphology.
• Tubercles along the ventrolateral margins, even at the juvenile stage, indicating defensive or structural functions.
• A compressed whorl profile, reflecting the streamlined shape typical of this family.

Juvenile ammonites are often rarer in the fossil record, as their smaller and more delicate shells were less likely to survive the fossilisation process. This makes such specimens particularly sought after by collectors.

Paleoecology and Depositional Environment

The Hoplitidae were active, nektonic predators inhabiting the shallow seas of the Cretaceous. Their streamlined shells and strong ribbing provided structural strength for buoyancy regulation and swimming efficiency. Juveniles such as this one would have occupied similar ecological niches to adults, preying on plankton, small crustaceans, and early molluscs, but were more vulnerable to predation due to their small size.

The depositional environment of Aube, France, during the Middle Albian was characterised by calm, fine-grained marine sediments. These conditions allowed for the preservation of delicate features, such as the ribbing and tuberculation on ammonite shells, making fossils from this region both scientifically important and visually appealing.

Collector and Scientific Significance

Juvenile Hoplitids are an invaluable addition to any fossil collection due to their rarity and the insights they provide into ammonite growth stages. For paleontologists, such fossils contribute to the understanding of ontogeny (the development of an organism) in ammonites, helping to refine evolutionary studies.

For collectors, this piece is not only scientifically significant but also aesthetically pleasing, with clear morphological details preserved. Its provenance from the renowned fossil-rich deposits of Aube adds further value, ensuring its place as a desirable specimen for both enthusiasts and serious collectors alike.

Key Details

• Species Group: Juvenile Hoplitidae ammonite
• Age: Middle Albian, Early Cretaceous (~107–105 million years old)
• Location: Aube, France
• Features: Juvenile form, ribbing, tubercles, evolute coiling
• Authenticity: 100% genuine fossil with Certificate of Authenticity
• Exact Specimen: The fossil shown in the photographs is the one you will receive
• Scale: 1 cm cube shown for accurate sizing

This rare Juvenile Hoplitids ammonite fossil from the Middle Albian of France is a scientifically significant and visually striking piece, ideal for collectors, educators, or anyone fascinated by the deep history of life on Earth.