Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.

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Promicroceras marstonense Fossil Ammonite Marston Magna Somerset Polished Slab
Promicroceras marstonense Fossil Ammonite Marston Magna Somerset Polished Slab - Image 2

Promicroceras marstonense Fossil Ammonite Marston Magna Somerset Polished Slab

Original price was: £42.00.Current price is: £35.70.

An exquisite High Grade Sliced and Polished Fossil Slab containing numerous Promicroceras marstonense ammonites from the iconic Marston Marble of Marston Magna, Somerset, UK. These beautiful ammonites are preserved in dark, fine-grained limestone, part of the Obtusum Zone in the Lower Lias, dating to the Lower Jurassic (~195–200 million years ago).

Promicroceras marstonense is one of the most characteristic and sought-after ammonites from this region, known for its compact size, detailed ribbing, and aesthetic arrangement in dense fossiliferous layers. The slab has been expertly cut and polished to reveal the structure, colour contrast, and detail of the ammonites embedded within the matrix.

Fossil Type: Ammonite (extinct marine cephalopod)

Species: Promicroceras marstonense

Geological Age: Lower Jurassic – Obtusum Zone, Lower Lias

Formation: Marston Marble (Lower Lias Group)

Depositional Environment: This fossil slab was formed in a quiet, shallow marine setting where fine muds and silts accumulated and allowed for exceptional fossil preservation. Periodic anoxic conditions enhanced the conservation of hard-shelled marine organisms, particularly ammonites.

Morphological Features:

  • Small, finely ribbed ammonites with evolute coiling
  • Dense assemblage of ammonites in natural orientation
  • Highly polished surface highlights growth lines and fossil detail

Notable:

  • High-grade decorative and scientific fossil slab
  • Classic fossil locality from British palaeontology
  • Ideal for display, collectors, or educational purposes
  • The exact specimen shown is the one for sale

Authenticity: All of our fossils are 100% genuine natural specimens and are provided with a Certificate of Authenticity. Please refer to the scale cube in the image (1cm per square) for full sizing details.

 

This Promicroceras marstonense ammonite slab is a true collector’s item—both a window into Early Jurassic marine life and a beautiful geological showpiece from the famed fossil beds of Somerset.

(Actual as seen)

Only 1 left in stock

SKU: VF0241 Category:

Description

Promicroceras marstonense Fossil

This high-grade polished fossil slab features Promicroceras marstonense, an ammonite from Marston Magna in Somerset, UK. The specimen is identified as Marston Marble and is associated with the Obtusum Zone of the Lower Lias, Lower Jurassic. Its sliced and polished presentation makes the fossil suitable for collectors, geological displays, natural history interiors and educational collections.

Geological Identification

Promicroceras marstonense is an ammonite fossil from the Lower Jurassic. Ammonites were extinct marine cephalopods related to modern nautiluses, squid and cuttlefish. Their coiled shells are among the most recognisable fossils in geological collections and are especially valued for their importance in dating and correlating Jurassic rocks.

The Lower Lias is a well-known Lower Jurassic succession containing abundant marine fossils. The Obtusum Zone is a biostratigraphic interval used by palaeontologists to help identify and compare Jurassic rocks. This specimen is described as Marston Marble and originates from Marston Magna, Somerset, a locality associated with fossiliferous Lower Jurassic material.

Specimen Presentation

The fossil has been sliced and polished to provide a clean, display-ready surface. Polishing enhances the contrast and detail of the preserved fossil within the slab while creating a refined finish for presentation. It can be displayed flat, mounted as part of a cabinet collection or incorporated into a geology-themed interior.

This is an appealing piece for ammonite collectors, Jurassic fossil enthusiasts, palaeontology students, museum-style displays and anyone interested in the geological heritage of Somerset. The named species, geological zone and Lower Jurassic age provide useful collecting and educational context.

Display and Sizing

Full sizing is shown in the photographs. Please review the photographs carefully for the complete view of the polished slab, its shape, finish and visible fossil detail. The photograph shows the actual specimen you will receive.

The slab can be used as a distinctive shelf, cabinet or desk display. Its polished surface is best kept clean and dry, using a soft cloth when necessary. Avoid harsh chemicals, abrasive materials and sudden changes in temperature when handling or displaying the specimen.

Authenticity

This Fossil is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.

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