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 Ammonites Marston Magna UK Polished Slab - Lower Jurassic Marston Marble Obtusum Zone
Promicroceras marstonense Fossil Ammonites Marston Magna UK Polished Slab - Lower Jurassic Marston Marble Obtusum Zone - Image 2

Promicroceras marstonense Fossil Ammonites Marston Magna UK Polished Slab – Lower Jurassic Marston Marble 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: VF0243 Category:

Description

Promicroceras marstonense Fossil Slab

This striking Promicroceras marstonense fossil is presented as a sliced, high grade polished slab featuring Marston Magna ammonite material from Somerset, UK. The specimen is identified as Promicroceras marstonense and is associated with Marston Marble, the Obtusum Zone, the Lower Lias and the Lower Jurassic. Its polished presentation makes the fossil suitable for collectors who appreciate clearly displayed Jurassic ammonite specimens, geological material and natural history objects.

Identification and Geological Context

Promicroceras marstonense is an ammonite fossil associated with the Lower Jurassic. The supplied geological identification places this material within the Lower Lias and the Obtusum Zone. It is also identified with Marston Marble, a geological material associated with Marston Magna in Somerset, UK. These details make the piece relevant to collectors of Jurassic fossils, ammonites, Lower Lias specimens and British geological material.

The Obtusum Zone provides a more specific biostratigraphic context within the Lower Jurassic identification supplied for this specimen. For collectors, zone-level information can add interest because it connects a fossil to a defined interval in the geological record. The Marston Magna association further places the specimen within the recognised Somerset collecting locality named in the product information.

Display and Collector Appeal

The slab has been sliced and polished to create a presentation suitable for display. A polished fossil slab can be shown in a cabinet, on a shelf, in a study, classroom or geological collection. The format allows the specimen to be appreciated as both a natural history object and a decorative piece with scientific interest. Its Promicroceras marstonense identification and Lower Jurassic context make it a distinctive addition to an ammonite or British fossil collection.

This fossil may appeal to collectors of ammonites, Jurassic fossils, Lower Lias material, Marston Marble, Somerset geology and polished fossil slabs. It is also suitable for anyone seeking a geological display piece connected with Marston Magna and the Obtusum Zone.

Specimen and Sizing Information

The photograph shows the actual specimen you will receive.

Full sizing is shown in the photographs.

Please review the photographs carefully for the specimen’s presentation, visible fossil features and overall appearance. The images are provided to show the individual slab included with the listing and to assist with judging its display character.

Certificate of Authenticity

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

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