sedimentary

Weathered fossil-bearing pebble, possibly fossiliferous limestone

Fossiliferous carbonate rock; exact fossil and rock identification are not certain from the photograph

AI-generated identification · may be incorrect

Gray-green, fine-grained rounded pebble with a brown-and-cream exposed feature that may be a fossil or mineral-filled cavity. Hardness and composition cannot be reliably determined visually; carbonate matrix may fizz with dilute acid.

Identified October 14, 2026More sedimentary →

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At a glance

Common name: Weathered fossil-bearing pebble, possibly fossiliferous limestone
Scientific name: Fossiliferous carbonate rock; exact fossil and rock identification are not certain from the photograph
Category: sedimentary
Identified: October 14, 2026
Method: Standard

AI Estimated Value

About $1–$15 as an unidentified common pebble; higher value would require a clearly identifiable, legally collected fossil.

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 sediment deposited in a marine environment, later lithified and rounded by water; the image does not reveal its age or precise formation.

Uses & applications

Primarily a collecting or educational specimen; fossiliferous limestone is also used as building stone and aggregate.

Geological facts

The contrasting brown patch could be fossil material, an infilled cavity, or weathering rather than a recognizable fossil.

Field identification & locations

Look for repeated shell or skeletal patterns and test a fresh spot for acid reaction to assess carbonate; a close-up or locality information would help identify it. Similar pebbles occur on beaches and in river gravels sourced from sedimentary rocks.