Rock Identifier
Likely fossilized bone fragment (Fossil bone; exact taxon and geological age cannot be determined from the image) — fossil
fossil

Likely fossilized bone fragment

Fossil bone; exact taxon and geological age cannot be determined from the image

AI-generated identification · may be incorrect

Tan, rough, porous specimen with irregular texture; fossil bone is largely mineralized apatite, typically Mohs hardness about 5. The visible shape and surface are consistent with bone, but the image alone cannot confirm identification.

Identified More fossil →
Explore Likely fossilized bone fragment in the encyclopedia →

Identify your own rocks.

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

App StoreGoogle Play

Physical properties

Tan, rough, porous specimen with irregular texture; fossil bone is largely mineralized apatite, typically Mohs hardness about 5. The visible shape and surface are consistent with bone, but the image alone cannot confirm identification.

Formation & geological history

Bone buried in sediment can become fossilized as minerals replace or fill its structure over thousands to millions of years. The age and depositional setting are unknown.

Uses & applications

Primarily collected and studied for paleontological interest; scientifically important finds should be reported rather than sold.

Geological facts

Fossil bone can retain internal pores and anatomical structure, but weathered rock can look similar.

Field identification & locations

Compare its texture and shape with verified bone fossils; avoid cleaning or breaking it, and consult a local museum or paleontologist. Fossils occur in sedimentary deposits worldwide.

More like this

Other fossil specimens

Probable fossil-bearing rock or mineral concretion (Unidentified carbonate-rich concretion with a possible fossil inclusion) — fossil

Probable fossil-bearing rock or mineral concretion

Unidentified carbonate-rich concretion with a possible fossil inclusion

fossil
Likely fossil oyster shell (Fossilized bivalve shell; exact species cannot be identified from the image) — fossil

Likely fossil oyster shell

Fossilized bivalve shell; exact species cannot be identified from the image

fossil
Crinoid Stem Fossil in Matrix (Phylum Echinodermata, Class Crinoidea) — fossil

Crinoid Stem Fossil in Matrix

Phylum Echinodermata, Class Crinoidea

fossil
Fossiliferous limestone (likely a crinoidal or shell-fragment limestone) (Bioclastic limestone, composed chiefly of calcite (CaCO₃)) — sedimentary

Fossiliferous limestone (likely a crinoidal or shell-fragment limestone)

Bioclastic limestone, composed chiefly of calcite (CaCO₃)

sedimentary
Fossil oyster shell (Oyster (family Ostreidae); shell composed chiefly of calcite (CaCO₃)) — fossil

Fossil oyster shell

Oyster (family Ostreidae); shell composed chiefly of calcite (CaCO₃)

fossil
Weathered fossil bone fragment (identification uncertain) (Fossilized bone; exact taxon and mineral composition cannot be determined from the image) — fossil

Weathered fossil bone fragment (identification uncertain)

Fossilized bone; exact taxon and mineral composition cannot be determined from the image

fossil