Promicroceras Calcite Ammonite Fossil, Black Ven Marls, Lower Lias, Jurassic Coast: Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK

Description

Fossil Type: Promicroceras calcite ammonite

Geological Formation: Black Ven Marls

Geological Age: Lower Lias, Jurassic (approximately 190 million years ago)

Location: Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK

Certificate of Authenticity Included

Scale Cube = 1cm

Full Sizing Details Visible in Photo

This Promicroceras calcite ammonite fossil comes from the Black Ven Marls formation in the Lower Lias of the Jurassic Coast, Lyme Regis, Dorset, UK. This specimen is a highly collectible and well-preserved example from the Lower Jurassic period, a time when marine life flourished and ammonites like this one roamed the seas.

The fossil has been cleaned, prepped, and treated by our expert team member Alison, ensuring it is in excellent condition for display or educational purposes. This specimen was discovered by our team members Alister and Alison on 26 April 2025, and comes with a Certificate of Authenticity to confirm its provenance and authenticity.

Species and Morphology Information:

• Species: Promicroceras calcite ammonite
• Geological Age: Lower Lias, Jurassic (around 190 million years ago)
• Depositional Environment: This ammonite fossil comes from the Black Ven Marls, which were deposited in a marine environment during the Lower Jurassic period. The Jurassic Coast is well-known for its rich marine fossils, including many species of ammonites.
• Morphology Features: The Promicroceras calcite ammonite features a characteristic spiraled shell with distinct ribbing. These ammonites are noted for their small size and elegant curvature, which makes them an attractive addition to any fossil collection. The calcite preservation gives this specimen an interesting appearance, with clear details that make it stand out.
• Notable Features: The fossil is well-preserved with clear details of the spiral structure, making it an excellent piece for study or display. The natural calcite formation enhances its beauty and adds a unique touch to this fossil.
• Family: Promicroceratidae
• Superfamily: Perisphinctoidea
• Order: Ammonitida
• Biozone: This ammonite is found in the Lower Lias, a Jurassic marine biozone characterized by a rich diversity of marine life, including ammonites, belemnites, and other prehistoric creatures.
• Depositional Environment: The Black Ven Marls formation indicates the presence of a shallow, marine environment during the Lower Jurassic, a time when ammonites like Promicroceras thrived in the seas.

Size and Visuals:

This Promicroceras calcite ammonite fossil measures approximately 4 inches in diameter. The scale cube in the photo represents 1cm, and full size details are clearly visible in the accompanying images.

Authenticity and Certification:

This Promicroceras calcite ammonite fossil is 100% genuine, with a Certificate of Authenticity included. This certificate guarantees that the ammonite was discovered on the Jurassic Coast, in the Lower Lias formation, and has been carefully preserved and authenticated.

Why Buy This Fossil:

• Genuine Fossil: The Promicroceras calcite ammonite is a genuine fossil from the Lower Lias, Jurassic period. It has been fully authenticated with a Certificate of Authenticity.
• Rare and Collectible: Promicroceras ammonites are rare and highly sought-after by collectors due to their unique spiral shape and the high quality of preservation.
• Educational Value: This ammonite offers a wonderful opportunity for education, whether used to study the Jurassic marine environment, the evolution of ammonites, or the depositional processes of the Lower Lias.
• Beautiful Display Piece: The fossil’s spiraled structure, calcite preservation, and distinct ribbing make it an ideal display piece for a fossil collection, museum exhibit, or classroom.

Note: The photo shown is of the actual specimen you will receive. The scale cube in the image represents 1cm, and full size details are visible in the photos.