Rocky Mountain Minerals and Fossils
Trilobite (Orygmaspis spinula) in matrix - Bull River, Cranbrook, British Columbia, Canada
Trilobite (Orygmaspis spinula) in matrix - Bull River, Cranbrook, British Columbia, Canada
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One of my favourite Canadian trilobites in inventory. This showy Orygmaspis spinula trilobite is large (measures approximately 3.5 × 2.5 cm) with a dark gray to black shade. It is preserved on a colour-contrasting 12 × 10.5 cm slab of slate. Its broad, rounded head shield (cephalon), prominent central axis and clearly defined thoracic segments show quite a bit of three-dimensionality. Slender lateral spines sweep backward along the body with the genal spines almost reaching the pygidium!
The dark preservation, distinct segmentation and delicate spines make this an appealing display specimen for a collection of Canadian Cambrian trilobites.
The specimen comes from Upper Cambrian sediments of the McKay Group in the Bull River Valley, east of Cranbrook and Fort Steele, British Columbia, Canada.
British Columbia fossils are illegal to sell, except under special circumstances. I represent a team that has claims on several trilobite localities in BC that have been legally grandfathered into older legislation. This allows them to legally excavate, prepare and sell fossils from these particular claims, including this specimen. Learn more about British Columbia fossils and their legal status.
For those interested in learning more about the trilobites of the McKay Group I recommend the following scientific paper: Furongian (Upper Cambrian) trilobites from the McKay Group, Bull River Valley, near Cranbrook, southeastern British Columbia, Canada (2016) by Brian D. E. Chatterton and Stacey Gibb in Palaeontographica Canadiana No 35. It is jointly published by the Canadian Society of Petroleum Geologists (now known as the Canadian Energy Geoscience Association) and the Geological Association of Canada
Fossil: Trilobite
Species: Orygmaspis spinula
Age: Upper Cambrian
Formation: McKay Group
Locality: Bull River valley, East of Cranbrook, British Columbia, Canada
Dimensions: Trilobite: 3.5 × 2.5 cm; plate: 12 × 10.5 cm
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The Exact Specimen Pictured
The specimen shown in the photographs is the exact specimen you will receive.
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Carefully Packed for Collectors
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Shipping & Local Pickup
We ship to Canada and the United States. Other destinations may be available by arrangement—contact us before ordering. Calgary pickup by appointment.