Description
This listing is for a genuine Polymorphopteris polymorpha fossil plant fern, originating from the Coal Measures of the Carboniferous Period (approximately 315–300 million years ago). Collected at Radstock, Somerset, UK, this specimen is a beautiful and scientifically significant example of fossilised vegetation from one of the most important geological intervals in Earth’s history. The fossil shown in the photographs is the exact specimen you will receive. Scale cube = 1 cm – please refer to the photos for accurate sizing
Your specimen was discovered by our own team members, Alister and Alison, on 18 July 2025, and has since been carefully cleaned, prepped, and treated by Alison to preserve its natural features. All of our fossils are 100% genuine specimens and are supplied with a Certificate of Authenticity for complete assurance.
Geological Context: Carboniferous Coal Measures
The Coal Measures represent one of the most famous and scientifically important geological units in Britain, deposited during the Pennsylvanian sub-period of the Carboniferous. At this time, vast swamp forests stretched across much of what is now Europe, forming the foundations of the modern coal seams.
In Radstock, Somerset, the Coal Measures preserve an abundance of fossil plants, including lycopods, horsetails, seed ferns, and true ferns such as Polymorphopteris polymorpha. The depositional environment was that of extensive tropical wetlands and deltaic plains, with rapid burial of plant matter in fine sediments and peat. This unique environment facilitated the exceptional preservation of delicate fronds and leaf structures, now visible as carbonised impressions within the rock.
The Species: Polymorphopteris polymorpha
Polymorphopteris polymorpha was a fern belonging to the order Filicales, within the family Aneimiaceae. This species is recognised by its finely divided pinnate fronds, which display elegant branching patterns and lobed leaflets. The name Polymorphopteris reflects the variable morphology of the fronds, which show subtle differences in shape and division across different parts of the plant.
As a member of the Carboniferous swamp forests, Polymorphopteris polymorpha contributed to the dense vegetation that ultimately formed Britain’s coal deposits. Its growth habit was that of a large, ground-covering or climbing fern, thriving in humid and lowland tropical swamp conditions. Fossilised examples such as this provide direct evidence of the complex plant ecosystems that flourished during the Carboniferous.
Morphological and Scientific Features
- Period: Carboniferous (Pennsylvanian, c. 315–300 Ma)
- Formation: Coal Measures
- Locality: Radstock, Somerset, UK
- Species: Polymorphopteris polymorpha
- Order: Filicales
- Family: Aneimiaceae
- Plant Traits: Pinnate fronds with divided leaflets, distinctive venation, carbonised impressions
- Significance: Key component of Carboniferous coal swamp flora
The preservation of delicate venation and frond structure makes specimens of Polymorphopteris polymorpha both aesthetically appealing and scientifically valuable. These features allow paleobotanists to study the evolution of early ferns and their role within Carboniferous ecosystems.
Collector and Display Value
This fossil plant is not only of scientific importance but also a beautiful natural specimen. The fine detail of the fronds captures the elegance of ancient swamp forest vegetation and offers a direct connection to the lush, tropical landscapes of the Carboniferous.
Fossils from the Radstock Coal Measures are highly sought after due to their exceptional preservation and historical significance. They represent the very forests that gave rise to the industrial coal deposits of Britain. This Polymorphopteris polymorpha specimen provides a rare opportunity to own a genuine piece of that prehistoric world.
All fossils are carefully prepared and come with a Certificate of Authenticity. This specimen, discovered and prepared by our team, is an outstanding addition to any fossil collection, suitable for display, education, or as a gift for natural history enthusiasts.
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