Choose Your SpecimenFossil Fish
·Real Fossil
Knightia eocaena on Matrix
- Real Fossil
- ~50 million years
- Ships worldwide
£15.99
● In stock — dispatched within 2 working days
Excellent Knightia fossil fish, 5-10cm in length, ~50 million years old, presented in original cream-coloured limestone
Choose Your Exact Specimen
You will receive the exact fossil shown for your chosen specimen.
Gift Suitable
Knightia is a perfect display piece that shows great detail and draws attention, perfect for any enthusiast who either wants a unique specimen for their collection, or to display framed in a prominent area of their home.
Only 1 of this specimen — once it's gone, it's gone.
Specimen Record
DTF-2ADE07A1-BFE508B3Exact specimen — your selection
Each option is photographed individually; you receive the specimen you select.
- Species
- Knightia eocaena
- Identification confidence
- Not recorded
- Age
- ~50 million years
- Geological period
- Eocene
- Formation
- Green River Formation (USA)
- Locality
- Wyoming, Utah, Colorado (USA)
- Dimensions
- Matrix: 6.5 × 6.5 cm. Fossil: 4.5 × 0.7 cm (Matrix: 2.6 × 2.6 in. Fossil: 1.8 × 0.3 in)
- Weight
- Not recorded
Condition & Treatment
- Repair
- Not recorded
- Restoration
- Not recorded
- Stabilisation
- Not recorded
- Polishing
- Not recorded
- Composite
- Not recorded
"Not recorded" means we hold no verified record for that detail — it is not a claim either way.
Curator Note
Knightia fossils form in low oxygen environments as the fish sat at the bottom of the river, protected from predators. Lime sediment deposited on top of the bodies preserve and compress them in limestone as the organic material is replaced by carbon and minerals.
At a Glance
Type
Genuine fossil
Display
Framed, hanging or table-top
Gift suitable
Yes
About This Fossil
Knightia lived in huge shoals in large freshwater lakes during the Eocene, around 50 million years ago.
They come from one of the most famous fossil sites on Earth, the Green River Formation in Wyoming, Utah, Colorado.
These are early ray-finned fish, herring-like, and some of the most recognisable fossils you can find.
Formation & Preservation
Knightia fossils form in low oxygen environments as the fish sat at the bottom of the river, protected from predators. Lime sediment deposited on top of the bodies preserve and compress them in limestone as the organic material is replaced by carbon and minerals.
Authenticity & Sourcing
Real vs Replica
- This is a genuine fossil — not a replica unless clearly stated. Clearly described and honestly presented.
- You will receive the exact specimen you select.
Ethical Sourcing
- Sourced from established suppliers and known commercial sites. We do not buy from localities we know to be protected, scientifically restricted, or subject to export controls. Origin and sourcing information is shared where known.
- ✓We will not knowingly handle specimens removed in breach of any country's heritage or export laws.
Origin & Natural Variation
Stated origin (Wyoming, Utah, Colorado (USA)) and formation (Green River Formation (USA)) are based on supplier information and available geological references. Identification can vary in certainty — especially for fragments — so where exact locality cannot be independently verified, we describe the formation rather than a single quarry.
Fossils are natural objects. Expect minor variation in colour, surface texture, and matrix, mineralisation and surface detail. Treatment information is shown under Condition & Treatment where it is recorded. “Not recorded” means we hold no verified record for that detail; it is not a claim that no treatment occurred.
Read our full authenticity & honest descriptions policy or the authenticity & sourcing clause in our terms.
Shipping, Returns & Packaging
• UK shipping: Free on orders of £50 or more. Standard £4.95 (Royal Mail Tracked 48, typically 2–3 working days after dispatch).
• International: Available worldwide. Rates at checkout.
• Packaging: Individually wrapped, cushioned, and boxed. Fragile specimens receive extra protection.
• Dispatch: Within 2 working days (framed, mounted, or made-to-order pieces take 1 additional working day).
• Returns: 30-day returns. Contact us first. Item must be in original condition.