fossil

Shark Eye Moon Snail Fossil

Neverita duplicata

Mohs hardness of 3; white to grey coloration; porcelain-like luster; composed of calcium carbonate.

Identified October 22, 2026More fossil →

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Physical properties

Mohs hardness of 3; white to grey coloration; porcelain-like luster; composed of calcium carbonate.

Formed through permineralization of marine gastropod shells in coastal sedimentary environments during the Cenozoic era.

Collected as a natural beach specimen, used in educational displays and amateur fossil collections.

Moon snails hunt other mollusks by drilling a distinct round hole into their shells to feed on the soft tissue.

Found abundantly in coastal sandy beaches worldwide, easily identified by its smooth, globular shape and low spire.

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)

Porous limestone pebble

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

Weathered fossil bone fragment (identification uncertain)

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