RARE Enrolled Brongniartella minor Trilobite Fossil – Caradoc Stage, Ordovician – Coed Maes Newyddion, Eryri, Wales – Certified Genuine


£ 60.00

RARE Enrolled Brongniartella minor Trilobite Fossil

Caradoc Stage, Ordovician Period – Coed Maes Newyddion, Eryri (Snowdonia), Wales

An exceptional and rare example of an enrolled trilobite fossil from the
Caradoc-aged rocks of Coed Maes Newyddion in the Eryri (Snowdonia) region of North Wales. This specimen is identified as Brongniartella minor, a distinctive trilobite from the Middle to Late Ordovician and notable for its compact, tightly enrolled preservation.

This well-preserved fossil captures the ancient defensive posture of trilobites, coiled into a ball to protect their soft undersides—making this a prized example of behavioral fossil evidence.

Geological & Stratigraphic Information:


• Formation/Locality: Coed Maes Newyddion, Eryri (Snowdonia), Wales
• Geological Stage: Caradoc (Middle to Upper Ordovician, ~460–450 million years ago)
• Depositional Environment:
• Marine shelf environment
• Fine siltstones and mudstones, likely deposited under relatively low-energy conditions
• Fauna-rich marine strata supporting trilobites, brachiopods, and graptolites
• Biozone (if inferred): Likely in the Nemagraptus gracilis Biozone or equivalent, typical of Caradoc faunas
• Preservation: Calcareous or siliciclastic shale preservation, fossil shows natural articulation

Taxonomic Details:


• Kingdom: Animalia
• Phylum: Arthropoda
• Class: Trilobita
• Order: Phacopida
• Family: Encrinuridae
• Genus: Brongniartella
• Species: Brongniartella minor
• Described by: Reed, 1896

Morphological Features:


• Compact, enrolled specimen—head (cephalon) and tail (pygidium) tightly joined
• Moderate cephalic spines and well-developed axial lobe
• Crescentic eyes visible under magnification
• Exoskeleton shows detailed segmentation and pleural lobes

Scientific & Collector's Value:


• Excellent example of enrolment in trilobites—an important behavioural adaptation
• Rarely found in such complete and naturally enrolled state
• Important representative of Ordovician faunal assemblages in the UK
• Desirable for both scientific reference and high-end fossil collections

Specimen Details:


• Fossil Type: Enrolled trilobite
• Species: Brongniartella minor
• Origin: Coed Maes Newyddion, Eryri (Snowdonia), North Wales
• Authenticity: 100% Genuine Specimen
• Certificate: Supplied with a Certificate of Authenticity
• Size Reference: Please refer to photo – scale rule squares/cube = 1cm
• Image: The photograph shows the exact specimen you will receive

What’s Included:


• Your selected fossil specimen
• Certificate of Authenticity
• Secure packaging with protective wrap for safe transit

Perfect for:


• Serious trilobite collectors
• Ordovician fossil enthusiasts
• Palaeontological education and research
• Unique gift for fossil and natural history lovers