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.
Fossil Type: Trilobite impression (complete or partial exoskeleton)
Species:Ourisia micrurus
Location: Hafod Y Garreg roadside exposure, Trawsfynydd, Wales, UK
Formation: Maentwrog Formation
Geological Series: Merioneth Series
Geological Period: Upper Cambrian (approx. 494–485 million years ago)
Depositional Environment: Low-energy, deep marine setting with fine sediment accumulation below wave base
Biozone: Believed to be in proximity to the Parabolina spinulosa Zone
Family: Olenidae
Superfamily: Olenoidea
Order: Ptychopariida
Formally Described By: Richter (1956)
This scientifically significant fossil is a genuine specimen of Ourisia micrurus, an elongate trilobite from the Upper Cambrian period. It was found at an exposure along the road at Hafod Y Garreg near Trawsfynydd, a site known for preserving trilobite fauna from the Maentwrog Formation.
Morphology Features:
Slender, streamlined exoskeleton
Well-defined cephalon with short glabella
Narrow thoracic segments with axial furrows
Small pygidium (tail plate)
Adapted for life in deep marine environments with low oxygen levels
Notable Context:
Ourisia micrurus is relatively rare compared to coeval genera such as Parabolina, making this an especially collectible specimen.
Specimens from the Maentwrog Formation are prized for their fine preservation in dark-grey shales.
These fossils contribute to our understanding of biogeographical diversity during the Cambrian Explosion.
What’s Included:
The exact fossil shown in the photographs
Scale cube = 1cm (for accurate sizing — please refer to photos)
A Certificate of Authenticity certifying the specimen’s origin and genuineness
Carefully packaged for secure shipping
Important Note:
All of our Fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. This piece was personally chosen for its scientific relevance, preservation, and overall aesthetic quality. It is ideal for collectors, educators, museums, or anyone passionate about the Earth’s ancient past.
Please feel free to contact us with any questions. We’re happy to provide more information or assistance.
Fossil Type: Trilobite impression (complete or partial exoskeleton)
Species:Ourisia micrurus
Location: Hafod Y Garreg roadside exposure, Trawsfynydd, Wales, UK
Formation: Maentwrog Formation
Geological Series: Merioneth Series
Geological Period: Upper Cambrian (approx. 494–485 million years ago)
Depositional Environment: Low-energy, deep marine setting with fine sediment accumulation below wave base
Biozone: Believed to be in proximity to the Parabolina spinulosa Zone
Family: Olenidae
Superfamily: Olenoidea
Order: Ptychopariida
Formally Described By: Richter (1956)
This scientifically significant fossil is a genuine specimen of Ourisia micrurus, an elongate trilobite from the Upper Cambrian period. It was found at an exposure along the road at Hafod Y Garreg near Trawsfynydd, a site known for preserving trilobite fauna from the Maentwrog Formation.
Morphology Features:
Slender, streamlined exoskeleton
Well-defined cephalon with short glabella
Narrow thoracic segments with axial furrows
Small pygidium (tail plate)
Adapted for life in deep marine environments with low oxygen levels
Notable Context:
Ourisia micrurus is relatively rare compared to coeval genera such as Parabolina, making this an especially collectible specimen.
Specimens from the Maentwrog Formation are prized for their fine preservation in dark-grey shales.
These fossils contribute to our understanding of biogeographical diversity during the Cambrian Explosion.
What’s Included:
The exact fossil shown in the photographs
Scale cube = 1cm (for accurate sizing — please refer to photos)
A Certificate of Authenticity certifying the specimen’s origin and genuineness
Carefully packaged for secure shipping
Important Note:
All of our Fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. This piece was personally chosen for its scientific relevance, preservation, and overall aesthetic quality. It is ideal for collectors, educators, museums, or anyone passionate about the Earth’s ancient past.
Please feel free to contact us with any questions. We’re happy to provide more information or assistance.
Additional information
Era
Cambrian
Origin
United Kingdom
Cambrian Information
The Cambrian Period (541–485 million years ago) was the first period of the Paleozoic Era, marking a dramatic explosion of life known as the Cambrian Explosion. During this time, complex multicellular organisms rapidly diversified, giving rise to the first arthropods, mollusks, echinoderms, and chordates—early ancestors of vertebrates. The climate was generally warm, with high sea levels covering much of the continents, creating vast shallow seas where life thrived. Iconic creatures such as Trilobites, Anomalocaris, and Opabinia dominated the oceans, while the first primitive reefs formed. The Cambrian set the stage for the evolution of modern animal groups and the complexity of marine ecosystems.
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