Description
RARE Flexicalymene caractaci Trilobite Fossil
Caradoc Stage, Upper Ordovician – Coed Maes Newyddion, Eryri (Snowdonia), Wales, UK
Offered here is a beautiful and scientifically significant specimen of the trilobite Flexicalymene caractaci, found at Coed Maes Newyddion, within the historic fossiliferous strata of Eryri (Snowdonia National Park), North Wales. This fossil dates to the Caradoc Stage of the Upper Ordovician, a key period for marine biodiversity and trilobite evolution.
Geological and Palaeontological Details:
- Fossil Type: Trilobite (typically enrolled specimen)
- Species: Flexicalymene caractaci
- Locality: Coed Maes Newyddion, Eryri (Snowdonia), North Wales, UK
- Geological Age: Upper Ordovician, Caradoc Stage (approx. 460–449 million years ago)
- Formation: Likely part of the Bala Group, which is prevalent in this area
- Depositional Environment:
- Marine shelf to deeper marine setting
- Fine-grained sediment indicates low-energy deposition with occasional turbidity influences
- Biozone: Didymograptus murchisoni or associated trilobite biozones in the Caradoc sequence
- Order: Phacopida
- Family: Calymenidae
- Superfamily: Calymenoidea
- Morphology Features:
- Typically enrolled posture, a defensive response in life
- Broad, arched glabella (central head lobe)
- Semi-circular cephalon and pygidium
- Genal angles generally rounded or slightly produced
- Thoracic segments with well-defined pleural furrows
- Scientific Relevance:
- Flexicalymene caractaci is key to biostratigraphy in the British Ordovician and aids in dating marine sequences
- Widely studied as a representative of widespread British calymenid trilobites
- Named by Murchison (1859), a prominent early geologist and palaeontologist
Product Specifics:
- The exact specimen photographed is the item you will receive
- Scale Reference: 1cm cube/square included in photos – please see images for precise sizing
- Includes a Certificate of Authenticity
- Professionally handled and carefully chosen for display and scientific interest
Why Purchase From Us?
- All our fossils are 100% Genuine Specimens – no replicas or fakes
- Each item is individually selected and fully researched
- Perfect for collectors, display, educational use, or scientific reference
- We provide a Certificate of Authenticity with every item for peace of mind
Please contact us if you need further information, more photographs, or assistance with multiple orders. We’re always happy to support enthusiasts and collectors in building their collections with high-quality, authentic material.






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