fossil

Fossilized gastropod (likely nerite or related sea snail)

Gastropoda; shell composed originally of aragonite/calcite, commonly replaced or infilled by calcite

AI-generated identification · may be incorrect

Rounded, low-spired coiled shell with a visible aperture and fine growth ridges; gray-brown, dull to slightly pearly luster. Mohs hardness is typically about 3-4 for calcitic fossil material; cleavage is absent or poorly expressed, and specific gravity is roughly 2.6-2.8.

Identified August 27, 2026More fossil →

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At a glance

Common name: Fossilized gastropod (likely nerite or related sea snail)
Scientific name: Gastropoda; shell composed originally of aragonite/calcite, commonly replaced or infilled by calcite
Category: fossil
Identified: August 27, 2026
Method: Standard

AI Estimated Value

About $5-$30 for a common incomplete specimen; $30-$150 or more for a well-preserved, identified specimen with provenance.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

A marine snail shell deposited in sediment and fossilized through mineral replacement, cementation, or internal infilling, usually during the Cenozoic or Mesozoic. Exact age cannot be determined from the photograph alone.

Uses & applications

Primarily a collectible and educational fossil; polished or attractive examples may be used decoratively. It has little industrial value compared with bulk limestone.

Geological facts

The opening is the shell aperture, while the spiral ridges record growth. The apparent hole may be natural damage, erosion, or a borehole made by a predatory organism.

Field identification & locations

Common in marine limestones and coastal sedimentary deposits worldwide; inspect for consistent spiral geometry, mineralized texture, and sediment infill. A locality label or matrix would greatly improve identification and dating.