fossil

Fossiliferous limestone pebble

Calcite-rich limestone containing possible brachiopod or coral fossil impressions

AI-generated identification · may be incorrect

Gray-beige, dull, rounded pebble with pale ribbed structures suggestive of fossil fragments; likely Mohs 3 if calcitic. Mineral composition and crystal structure cannot be confirmed from the image alone.

Identified September 26, 2026More fossil →

Explore Fossiliferous limestone pebble in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Limestone forms from accumulated carbonate sediments, often including marine shells and organisms, then lithifies; the pebble was later rounded by transport. Its age and exact fossil identity are not determinable visually.

Uses & applications

Primarily a collecting or educational specimen; limestone is widely used for cement, aggregate, and building stone.

Geological facts

The ribbed markings may be fossil remains, but could also be mineral veins or surface weathering; a close-up or acid test would help distinguish them.

Field identification & locations

Look for repeated biological symmetry, shell ribs, or identifiable fossil shapes on freshly cleaned surfaces. Fossiliferous limestone occurs in sedimentary basins worldwide.