RARE Parabolina spinulosa Fossil Trilobite – Upper Cambrian – Foel Gron, Dolgellau Series, Wales – Genuine with Certificate

Description

RARE Parabolina spinulosa Trilobite Fossil

Discovered from the renowned Foel Gron locality, near Meirionnydd, Wales, this exquisitely preserved fossil trilobite belongs to the species Parabolina spinulosa, a spiny trilobite known from the Upper Cambrian period. This particular specimen comes from the Dolgellau Series, P. spinulosa Biozone, a key biostratigraphic unit for Cambrian correlation in northwest Europe.

Fossil Overview:

• Species: Parabolina spinulosa
• Common Name: Spiny Trilobite
• Fossil Type: Body Fossil – Exoskeleton
• Size: Please refer to photo (1cm scale cube)
• Location Found: Foel Gron, Meirionnydd, Wales, UK
• Geological Age: Upper Cambrian (~497–485 million years ago)
• Formation / Series: Dolgellau Series
• Biozone: P. spinulosa Zone
• Depositional Environment: Deep marine shelf or slope setting with fine-grained mudstone and shale deposition
• Lithology: Typically found in dark-grey to black mudstones or siltstones of Cambrian marine origin

Morphological Features:

• Cephalon (Head): Broad with semicircular glabella and defined genal spines
• Thorax: Segmented with articulating axial lobes, often showing fine pleural details
• Pygidium (Tail): Narrow and tapering, sometimes bearing small spines
• Spines: Posterior thoracic spines are a notable feature, aiding in species identification
• Preservation: This example is compressed dorsoventrally, exhibiting detailed segmentation and exoskeletal ridges

Taxonomy:

• Kingdom: Animalia
• Phylum: Arthropoda
• Class: Trilobita
• Order: Ptychopariida
• Superfamily: Ellipsocephaloidea
• Family: Olenidae
• Genus: Parabolina
• Species: spinulosa
• First Described By: Salter, 1866

Notable Significance:

• Parabolina spinulosa is a biostratigraphic marker fossil used to define the P. spinulosa Zone, a key division of the Upper Cambrian in Britain and Scandinavia.
• Its unique morphology and wide stratigraphic use make it important for understanding Cambrian palaeoenvironments and trilobite evolution.
• Fossils from Foel Gron are part of historically collected and studied materials, including those in the British Geological Survey and Natural History Museum.

Summary:

This rare Parabolina spinulosa trilobite fossil is a genuine Upper Cambrian specimen from Wales, carefully collected and prepared for fossil enthusiasts, collectors, and academic interest. The fossil is clearly shown in the photo, and the scale cube = 1cm for exact sizing.

• Location: Foel Gron, Meirionnydd, Wales
• Zone: P. spinulosa Biozone
• Formation: Dolgellau Series
• Age: Upper Cambrian (~497–485 million years ago)
• Material: Black Cambrian mudstone matrix
• Certificate: 100% Genuine | Certificate of Authenticity included
• Fossil shown is the exact specimen you will receive

Note:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Your fossil has been carefully selected, and professionally cleaned and prepared to display the maximum detail possible.