Rock Identifier
Fossilized Gastropod (Gastropoda) — fossil
fossil

Fossilized Gastropod

Gastropoda

AI-generated identification · may be incorrect

Hardness of 3-7 depending on mineral replacement, color ranges from grey to white, dull to vitreous luster, amorphous to crystalline replacement structures.

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Physical properties

Hardness of 3-7 depending on mineral replacement, color ranges from grey to white, dull to vitreous luster, amorphous to crystalline replacement structures.

Formation & geological history

Formed through permineralization where the original shell material of an ancient snail is replaced by minerals like silica or calcite over millions of years.

Uses & applications

Used primarily for educational purposes, paleontological study, and by fossil collectors.

Geological facts

Gastropods are among the oldest animal groups, with fossil records dating back over 500 million years to the Late Cambrian period.

Field identification & locations

Identified by the distinct spiral or coiled shell shape embedded in sedimentary matrix; commonly found in limestone and shale formations worldwide.

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

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Crinoid Stem Fossil in Matrix

Phylum Echinodermata, Class Crinoidea

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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
Porous limestone pebble (Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image) — sedimentary

Porous limestone pebble

Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image

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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