British Trilobite Ogyginus Fossil Partial Ordovician Wales Display Specimen With Stand Upper Gilwern Quarry Llanvirn Series UK

British Trilobite Fossil – Ogyginus (Partial) Ordovician, Wales

This genuine British trilobite fossil is a partial specimen of the Ordovician genus Ogyginus, recovered from Upper Gilwern Quarry, Wales, UK, within the historic Llanvirn Series. Supplied with a display stand, this piece is ideal for cabinet presentation and makes a striking addition to any fossil collection.

The photographs show the exact specimen you will receive. Full sizing and scale can be clearly seen in the listing images. This fossil is a carefully chosen example, selected for its visible detail and overall presentation.

Discovery, Preparation & Authenticity

This specimen was discovered by our own team members, Alister and Alison, on 02 April 2024. After collection, it was carefully cleaned, prepped, and treated by Alison, ensuring the fossil’s natural features are clearly displayed while preserving its integrity.

The fossil is a genuine prehistoric specimen and includes a Certificate of Authenticity lifetime guarantee generic card, confirming its authenticity and geological origin.

Fossil Identification & Taxonomy

• Phylum: Arthropoda

• Class: Trilobita

• Order: Asaphida

• Genus: Ogyginus

• Age: Ordovician Period

• Stratigraphic Unit: Llanvirn Series

• Locality: Upper Gilwern Quarry, Wales, United Kingdom

Trilobites were marine arthropods that thrived in Paleozoic oceans for over 250 million years. The genus Ogyginus is a classic Welsh Ordovician trilobite, frequently associated with Middle Ordovician marine sediments.

Partial specimens commonly preserve important anatomical features such as portions of the cephalon (head), thoracic segments, and pygidium (tail). Ogyginus is typically recognised by its broad cephalon, gently curved glabella, well-defined axial lobe, and segmented thorax. The exoskeleton was originally composed of calcite, which contributed to its preservation potential.

Geological Setting – Llanvirn Series, Middle Ordovician

During the Middle Ordovician, approximately 465–470 million years ago, Wales lay beneath warm, shallow epicontinental seas. Fine marine sediments accumulated on the seabed, forming mudstones and shales that later lithified into the rocks seen today at Upper Gilwern Quarry.

These depositional environments supported a diverse marine fauna, including trilobites, brachiopods, molluscs, and graptolites. Periodic burial by sediment allowed organisms such as trilobites to fossilise, preserving remarkable anatomical detail within the rock matrix.

Upper Gilwern Quarry is regarded as a classic Welsh Ordovician fossil locality, known for yielding trilobite material that contributes to understanding regional stratigraphy and marine biodiversity of the period.

Collecting & Display Appeal

This Ogyginus trilobite fossil offers strong appeal for:

• Collectors of British Paleozoic fossils

• Enthusiasts of trilobite morphology and evolution

• Educational displays focused on Ordovician marine life

• Cabinet presentation with the included stand

• Unique geological gifts with documented provenance

The specimen represents a tangible piece of ancient Welsh seabed, formed hundreds of millions of years before the first land plants and terrestrial vertebrates.

Provenance & Purchase Confidence

• Genuine British trilobite fossil (Ogyginus)

• Middle Ordovician, Llanvirn Series

• Upper Gilwern Quarry, Wales, UK

• Discovered 02 April 2024 by Alister and Alison

• Cleaned, prepped, and treated by Alison

• Includes Certificate of Authenticity lifetime guarantee generic card

• Supplied with stand for display

• Exact specimen shown in photographs

An authentic and well-presented example of a Welsh Ordovician trilobite, combining scientific interest, historical geology, and strong display character.