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 Ammonite Fossil Slab – Polished Marston Marble, Lower Jurassic, Somerset UK
Promicroceras Ammonite Fossil Slab – Polished Marston Marble, Lower Jurassic, Somerset UK - Image 2

Promicroceras Ammonite Fossil Slab – Polished Marston Marble, Lower Jurassic, Somerset UK

Original price was: £30.00.Current price is: £27.00.

An exceptional High-Grade Sliced and Polished Fossil Slab featuring multiple specimens of Promicroceras marstonense, sourced from the renowned Marston Magna locality in Somerset, UK. These beautifully preserved ammonites are embedded in the distinctive Marston Marble, a fine-grained limestone from the Obtusum Zone of the Lower Lias, dating to the Lower Jurassic period, approximately 195–200 million years ago.

This premium fossil slab has been expertly prepared and polished to enhance the detail and clarity of the ammonite shells. Each specimen displays its characteristic tightly coiled morphology, prominent ribbing, and fine suture lines that are signature features of the species.

Fossil Type: Ammonite (extinct marine cephalopod)

Species: Promicroceras marstonense

Geological Age: Lower Jurassic – Hettangian to Sinemurian, Obtusum Zone

Formation: Lower Lias, Marston Marble

Depositional Environment: Formed in a shallow marine environment with calm, low-energy conditions. Fine sediments allowed for detailed preservation of marine invertebrates, with occasional anoxic layers promoting fossil integrity. Marston Marble is known for producing well-preserved, densely packed ammonite assemblages.

Morphological Features:

  • Small, evolute ammonites with pronounced radial ribbing
  • Tight coiling and minimal umbilicus
  • Excellent preservation of internal whorls and chamber partitions

Notable:

  • High-grade display slab from a classic Jurassic site
  • Contains multiple ammonites across a polished limestone surface
  • Ideal for collectors, educational purposes, and interior decor
  • Actual specimen shown – photo is of the exact item you will receive

Authenticity: All of our fossils are 100% genuine natural specimens and come with a Certificate of Authenticity. Each square or cube shown in the photo scale represents 1cm – please refer to the image for exact dimensions.

 

This rare Promicroceras marstonense slab from Marston Magna offers a striking and scientifically valuable glimpse into early Jurassic marine life. A stunning fossil for serious collectors and enthusiasts alike.

(Actual as seen)

Only 1 left in stock

SKU: VF0203 Category:

Description

An exceptional High-Grade Sliced and Polished Fossil Slab featuring multiple specimens of Promicroceras marstonense, sourced from the renowned Marston Magna locality in Somerset, UK. These beautifully preserved ammonites are embedded in the distinctive Marston Marble, a fine-grained limestone from the Obtusum Zone of the Lower Lias, dating to the Lower Jurassic period, approximately 195–200 million years ago.

This premium fossil slab has been expertly prepared and polished to enhance the detail and clarity of the ammonite shells. Each specimen displays its characteristic tightly coiled morphology, prominent ribbing, and fine suture lines that are signature features of the species.

Fossil Type: Ammonite (extinct marine cephalopod)

Species: Promicroceras marstonense

Geological Age: Lower Jurassic – Hettangian to Sinemurian, Obtusum Zone

Formation: Lower Lias, Marston Marble

Depositional Environment: Formed in a shallow marine environment with calm, low-energy conditions. Fine sediments allowed for detailed preservation of marine invertebrates, with occasional anoxic layers promoting fossil integrity. Marston Marble is known for producing well-preserved, densely packed ammonite assemblages.

Morphological Features:

  • Small, evolute ammonites with pronounced radial ribbing
  • Tight coiling and minimal umbilicus
  • Excellent preservation of internal whorls and chamber partitions

Notable:

  • High-grade display slab from a classic Jurassic site
  • Contains multiple ammonites across a polished limestone surface
  • Ideal for collectors, educational purposes, and interior decor
  • Actual specimen shown – photo is of the exact item you will receive

Authenticity: All of our fossils are 100% genuine natural specimens and come with a Certificate of Authenticity. Each square or cube shown in the photo scale represents 1cm – please refer to the image for exact dimensions.

 

This rare Promicroceras marstonense slab from Marston Magna offers a striking and scientifically valuable glimpse into early Jurassic marine life. A stunning fossil for serious collectors and enthusiasts alike.

Additional information

Era

Jurassic
Origin

United Kingdom

Jurassic Information

The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.

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