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 Somerset UK Polished Slab Lower Lias Marston Magna Obtusum Zone

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: VF0231 Category:

Description

Promicroceras marstonense Fossil Ammonite

This polished sliced fossil slab features Promicroceras marstonense, an ammonite identified with Marston Magna, Somerset, UK. The specimen is associated with Marston Marble and the Obtusum Zone of the Lower Lias, within the Lower Jurassic. Its polished slab presentation makes it suitable for fossil collectors, geology enthusiasts, educational displays and natural history interiors.

Identification and Geological Context

Promicroceras marstonense is a named ammonite fossil from the Lower Jurassic. Ammonites were extinct marine cephalopods with coiled shells, and their fossils are widely valued for their importance in understanding ancient marine environments and for their use in geological correlation. The Lower Lias represents an important interval of Jurassic geology, and the Obtusum Zone provides a more specific biostratigraphic context for this fossil identification.

The reference to Marston Marble connects this specimen with the Marston Magna area of Somerset. Marston Magna is recognised among fossil localities associated with Lower Jurassic material, making this specimen an appealing choice for collectors who value both taxonomic identification and geological locality information. The combination of species name, locality, geological unit and zone gives the piece strong educational and display interest.

Specimen Presentation

The fossil has been sliced and polished to create a clean display surface while retaining the character of the natural material. As a polished slab, it can be displayed in a fossil cabinet, geological collection, study, office, classroom or home interior. It also makes a useful addition to collections focused on ammonites, Jurassic fossils, Somerset geology or British palaeontology.

This specimen is described as high grade in the product name and is presented as a finished polished fossil item rather than an unprepared field piece. The natural fossil content and geological setting provide an opportunity to explore ammonite morphology, Jurassic marine life and the role of zonal fossil identification in geology.

Authenticity and Photograph Information

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

The photograph shows the actual specimen you will receive.

Full sizing is shown in the photographs.

Collector and Display Appeal

With its specific identification as Promicroceras marstonense, its Marston Magna, Somerset, UK association and its Lower Jurassic Obtusum Zone context, this fossil slab is well suited to collectors seeking accurately described British ammonite material. It can be used as a conversation piece, a teaching aid or a distinctive natural-history display object. The polished finish highlights the presentation of the fossil and allows the slab to be handled and displayed as part of a curated geological collection.

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