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 Multi Block Calcite Ammonite Fossils Black Ven Marls Lower Lias Jurassic Coast Black Ven Lyme Regis Dorset UK
Promicroceras Multi Block Calcite Ammonite Fossils Black Ven Marls Lower Lias Jurassic Coast Black Ven Lyme Regis Dorset UK - Image 2
Promicroceras Multi Block Calcite Ammonite Fossils Black Ven Marls Lower Lias Jurassic Coast Black Ven Lyme Regis Dorset UK - Image 3
Promicroceras Multi Block Calcite Ammonite Fossils Black Ven Marls Lower Lias Jurassic Coast Black Ven Lyme Regis Dorset UK - Image 4
Promicroceras Multi Block Calcite Ammonite Fossils Black Ven Marls Lower Lias Jurassic Coast Black Ven Lyme Regis Dorset UK - Image 5

Promicroceras Multi Block Calcite Ammonite Fossils Black Ven Marls Lower Lias Jurassic Coast Black Ven Lyme Regis Dorset UK

Original price was: £60.00.Current price is: £54.00.

Genuine Promicroceras Multi Block Ammonite Fossils from Lyme Regis

This listing is for an authentic Promicroceras multi block of calcite ammonite fossils from the world-famous Black Ven Marls, Lower Lias, at Black Ven, Lyme Regis, Dorset, UK. These ammonites date to the Lower Jurassic, approximately 200 million years ago, and represent a fascinating snapshot of early ammonite evolution. The specimen you see in the photographs is the exact one you will receive, with a 1 cm scale cube included for accurate sizing.

The fossil was discovered on 14 September 2025 by our team members Alister and Alison and has been carefully cleaned, prepped, and treated by Alison to preserve its natural beauty and scientific detail. As with all of our specimens, it is supplied with a Certificate of Authenticity, confirming it as a 100% genuine fossil.

Geological Context and Age

The Black Ven Marls are part of the Lower Lias sequence, exposed along the Dorset section of the Jurassic Coast – a UNESCO World Heritage Site renowned for its fossil richness. These sediments were deposited in shallow seas during the Early Jurassic, preserving a diverse marine fauna that included ammonites, belemnites, fish, and marine reptiles.

The multi block format reflects natural bedding layers where ammonites accumulated and were fossilised together. Promicroceras is a key index fossil for the Early Jurassic, used in stratigraphy to help define biozones within the Sinemurian stage. This makes specimens such as this both scientifically important and highly collectible.

Species Information – Promicroceras

Promicroceras belongs to the order Ammonitida, superfamily Eoderoceratoidea, and family Eoderoceratidae. These ammonites are relatively small but highly distinctive, with evolute, tightly coiled shells. Their ornamentation includes fine ribbing, and in some cases, tubercles (small nodules), which provide a striking texture.

The genus is significant in ammonite evolution as one of the early representatives of the Eoderoceratidae, appearing shortly after the Triassic–Jurassic extinction event. Its morphological features suggest it was a free-swimming nektonic predator in the shallow seas of the Early Jurassic.

Fossil Features and Preservation

This multi block specimen contains several ammonites preserved in calcite, which enhances their natural beauty and visibility against the marl matrix. The coiling, ribbing, and whorl structures of the ammonites are clearly visible, showing the characteristic features of Promicroceras.

The calcite preservation gives the ammonites a distinctive luster and makes them stand out attractively from the surrounding stone. The block format also preserves the fossils in their natural context, making it not only a visually striking specimen but also one that retains scientific integrity.

Collector and Scientific Significance

Promicroceras is highly valued by collectors and palaeontologists alike for its role in Early Jurassic biostratigraphy. Its presence in the Black Ven Marls helps define key ammonite zones, which are used to correlate rock layers across Europe. Multi block specimens such as this provide additional insight into ammonite assemblages and palaeoecological conditions.

For collectors, this fossil represents an outstanding opportunity to own a piece of Britain’s Jurassic heritage. Its provenance from the iconic Lyme Regis locality adds prestige and value, while its multi block composition makes it particularly eye-catching for display.

A Unique Fossil from the Jurassic Coast

This Promicroceras multi block of calcite ammonite fossils is an exceptional and genuine specimen from the Lower Jurassic of Dorset. With its strong provenance, scientific value, and striking appearance, it is ideal for collectors, educators, or anyone fascinated by natural history. Supplied with a Certificate of Authenticity, it is both a rare display piece and a scientifically important fossil from the Jurassic Coast.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

 

(Actual as seen)

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Description

Genuine Promicroceras Multi Block Ammonite Fossils from Lyme Regis

This listing is for an authentic Promicroceras multi block of calcite ammonite fossils from the world-famous Black Ven Marls, Lower Lias, at Black Ven, Lyme Regis, Dorset, UK. These ammonites date to the Lower Jurassic, approximately 200 million years ago, and represent a fascinating snapshot of early ammonite evolution. The specimen you see in the photographs is the exact one you will receive, with a 1 cm scale cube included for accurate sizing.

The fossil was discovered on 14 September 2025 by our team members Alister and Alison and has been carefully cleaned, prepped, and treated by Alison to preserve its natural beauty and scientific detail. As with all of our specimens, it is supplied with a Certificate of Authenticity, confirming it as a 100% genuine fossil.

Geological Context and Age

The Black Ven Marls are part of the Lower Lias sequence, exposed along the Dorset section of the Jurassic Coast – a UNESCO World Heritage Site renowned for its fossil richness. These sediments were deposited in shallow seas during the Early Jurassic, preserving a diverse marine fauna that included ammonites, belemnites, fish, and marine reptiles.

The multi block format reflects natural bedding layers where ammonites accumulated and were fossilised together. Promicroceras is a key index fossil for the Early Jurassic, used in stratigraphy to help define biozones within the Sinemurian stage. This makes specimens such as this both scientifically important and highly collectible.

Species Information – Promicroceras

Promicroceras belongs to the order Ammonitida, superfamily Eoderoceratoidea, and family Eoderoceratidae. These ammonites are relatively small but highly distinctive, with evolute, tightly coiled shells. Their ornamentation includes fine ribbing, and in some cases, tubercles (small nodules), which provide a striking texture.

The genus is significant in ammonite evolution as one of the early representatives of the Eoderoceratidae, appearing shortly after the Triassic–Jurassic extinction event. Its morphological features suggest it was a free-swimming nektonic predator in the shallow seas of the Early Jurassic.

Fossil Features and Preservation

This multi block specimen contains several ammonites preserved in calcite, which enhances their natural beauty and visibility against the marl matrix. The coiling, ribbing, and whorl structures of the ammonites are clearly visible, showing the characteristic features of Promicroceras.

The calcite preservation gives the ammonites a distinctive luster and makes them stand out attractively from the surrounding stone. The block format also preserves the fossils in their natural context, making it not only a visually striking specimen but also one that retains scientific integrity.

Collector and Scientific Significance

Promicroceras is highly valued by collectors and palaeontologists alike for its role in Early Jurassic biostratigraphy. Its presence in the Black Ven Marls helps define key ammonite zones, which are used to correlate rock layers across Europe. Multi block specimens such as this provide additional insight into ammonite assemblages and palaeoecological conditions.

For collectors, this fossil represents an outstanding opportunity to own a piece of Britain’s Jurassic heritage. Its provenance from the iconic Lyme Regis locality adds prestige and value, while its multi block composition makes it particularly eye-catching for display.

A Unique Fossil from the Jurassic Coast

This Promicroceras multi block of calcite ammonite fossils is an exceptional and genuine specimen from the Lower Jurassic of Dorset. With its strong provenance, scientific value, and striking appearance, it is ideal for collectors, educators, or anyone fascinated by natural history. Supplied with a Certificate of Authenticity, it is both a rare display piece and a scientifically important fossil from the Jurassic Coast.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

 

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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