fossil

Fossilized tooth or jaw fragment (likely fish or reptile)

Indeterminate vertebrate bone/tooth; mineralized hydroxyapatite, commonly Ca₅(PO₄)₃(OH)

AI-generated identification · may be incorrect

Hardness about 5 on the Mohs scale; gray-brown to metallic bronze, with a dull to weakly glossy luster and porous internal cavities. The layered, cellular texture is consistent with fossil bone or tooth rather than a crystalline mineral.

Identified September 10, 2026More fossil →

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At a glance

Common name: Fossilized tooth or jaw fragment (likely fish or reptile)
Scientific name: Indeterminate vertebrate bone/tooth; mineralized hydroxyapatite, commonly Ca₅(PO₄)₃(OH)
Category: fossil
Identified: September 10, 2026
Method: Standard

AI Estimated Value

About $10–$100 for an unidentified fragment; $100–$1,000+ if professionally identified, complete, rare, or from a documented locality.

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 biogenic material buried in sediment and permineralized as groundwater replaced or filled the original tissue with silica, calcite, or iron minerals; its age and exact formation environment cannot be determined from the image alone.

Uses & applications

Primarily a collector’s specimen, teaching aid, or display piece; not generally suitable for jewelry or construction.

Geological facts

The openings may represent natural bone pores, pulp cavities, or eroded chambers. Metallic bronze coloration can result from iron-bearing mineralization or surface treatment.

Field identification & locations

Identify by cellular porosity, irregular anatomy, and mineral-filled cavities; confirm with locality data, microscopy, or composition testing. Comparable fossil vertebrate material occurs worldwide in sedimentary formations.