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 UK High Grade Polished Slab Marble Obtusum Zone Lower Lias Lower Jurassic
Promicroceras marstonense Fossil Ammonite Marston Magna Somerset UK High Grade Polished Slab Marble Obtusum Zone Lower Lias Lower Jurassic - Image 2

Promicroceras marstonense Fossil Ammonite Marston Magna Somerset UK High Grade Polished Slab Marble Obtusum Zone Lower Lias Lower Jurassic

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: VF0236 Category:

Description

Fossil Identification

This listing features a Promicroceras marstonense fossil ammonite from Marston Magna, Somerset, UK. The specimen is presented as a sliced, high-grade polished slab, offering a distinctive display format for fossil collectors, geology enthusiasts and anyone interested in Lower Jurassic palaeontology. Its identification is associated with Marston Marble, the Obtusum Zone, the Lower Lias and the Lower Jurassic.

Geological Significance

The Lower Jurassic is an important interval in the geological record and is widely recognised for its marine fossil assemblages. Ammonites are extinct marine cephalopods with chambered shells, and their fossils are particularly valued in geology because successive forms can assist with the subdivision and correlation of sedimentary strata. Promicroceras marstonense is therefore an appealing fossil identification for collectors who value both the visual character of a polished specimen and its geological context.

Marston Magna, Somerset

This specimen is connected with Marston Magna in Somerset, UK, and is identified with Marston Marble. The additional geological designation places it within the Obtusum Zone of the Lower Lias, Lower Jurassic. These locality and stratigraphic details give the fossil a clear connection to the geology of Somerset and make it suitable for educational collections, display cabinets, geological study and curated ammonite assemblages.

Polished Slab Display

The sliced slab format reveals the fossil within a prepared polished surface, making it well suited to presentation in a home collection, office, classroom or museum-style display. The polished finish gives the specimen a refined appearance while retaining its identity as a geological specimen. Its high-grade presentation makes it an attractive choice for collectors seeking a distinctive Lower Jurassic ammonite fossil connected with a named zone and locality.

Sizing and Photographs

Full sizing is shown in the photographs. The photograph shows the actual specimen you will receive. Please review the images carefully for the complete presentation, surface appearance and overall form of this individual fossil slab.

Certificate of Authenticity

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

Collector and Gift Appeal

Promicroceras marstonense is an excellent addition to an ammonite collection, Lower Jurassic fossil display or geology-themed interior. The combination of a named fossil identification, Marston Magna locality, Marston Marble designation, Obtusum Zone reference and polished slab presentation gives this specimen strong educational and decorative appeal. It can be displayed as a conversation piece or used to support learning about ammonites, stratigraphy and the fossil record of the Lower Jurassic.

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