
Fossil-bearing sedimentary rock (possible bone or shell fossil)
Unidentified fossiliferous sedimentary matrix; exact fossil and host rock cannot be determined from the image
AI-generated identification · may be incorrectBrown, weathered, irregular block with pale embedded structures; likely sediment cemented by calcite or silica. Hardness, luster, and crystal structure cannot be established visually.
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Other fossil specimens
Probable fossil-bearing rock or mineral concretion
Unidentified carbonate-rich concretion with a possible fossil inclusion
Likely fossil oyster shell
Fossilized bivalve shell; exact species cannot be identified from the image
Crinoid Stem Fossil in Matrix
Phylum Echinodermata, Class Crinoidea
Fossiliferous limestone (likely a crinoidal or shell-fragment limestone)
Bioclastic limestone, composed chiefly of calcite (CaCO₃)
Fossil oyster shell
Oyster (family Ostreidae); shell composed chiefly of calcite (CaCO₃)
Rounded sedimentary pebble
Likely micritic limestone or calcareous sandstone