fossil

Fossil fish impression/cast (likely small ray-finned fish)

Unidentified Actinopterygii; possibly a fish fossil in laminated shale

AI-generated identification · may be incorrect

Flattened, elongated specimen with apparent body outline, fin/ray textures, and a glossy brown-gold surface, likely coated or resin-sealed. Fossil material is commonly calcite/phosphate replaced; hardness varies about 3–6 Mohs.

Identified August 19, 2026More fossil →

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At a glance

Common name: Fossil fish impression/cast (likely small ray-finned fish)
Scientific name: Unidentified Actinopterygii; possibly a fish fossil in laminated shale
Category: fossil
Identified: August 19, 2026
Method: Standard

AI Estimated Value

About $10–$50 if a common polished commercial fossil; $50–$300+ if genuine, well-preserved, identifiable, and accompanied by provenance. A gemologist or paleontologist should authenticate it before claiming higher value.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Likely formed when a fish was rapidly buried in fine lake or marine sediment, leaving a compression fossil or mineralized impression; age cannot be determined from the image, but similar commercial specimens range from Mesozoic to Cenozoic.

Uses & applications

Primarily a decorative or educational collectible; not normally used in construction or jewelry. The strong shine suggests polishing, lacquer, or resin treatment.

Geological facts

The regular rib-like marks along the edges may represent fin rays or sediment texture, but the image is insufficient for species-level identification.

Field identification & locations

Inspect the underside, matrix, and edges for natural rock texture, anatomical symmetry, and a fossil/matrix boundary. A label, locality, dimensions, and provenance are essential for valuation.