fossil

Gastropod Fossil

Class Gastropoda (fossilized)

Hardness varies depending on mineral replacement (typically Mohs 3.5-4 if calcite or 7 if silicated), color ranges from tan, brown, to grey, luster is dull to vitreous, spiral shell morphology with distinct whorls.

Identified July 28, 2026More fossil →

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Physical properties

Formation & geological history

Formed through permineralization or replacement where the original shell material (calcium carbonate) is replaced by minerals like silica, calcite, or pyrite over millions of years in aquatic sedimentary environments, dating from the Paleozoic to Cenozoic eras.

Uses & applications

Used for educational purposes, paleontological research, and as collector specimens.

Geological facts

Gastropods are among the most successful animal groups, appearing in the fossil record over 500 million years ago and adapting to marine, freshwater, and terrestrial habitats.

Field identification & locations

Found in marine and freshwater sedimentary rock layers globally, identified by their distinctive coiled, spiral shell shape. Common in limestone and shale formations.