fossil

Fossilized Gastropod / Coral

Phylum Mollusca / Cnidaria (Silicified or Calcified)

Hardness: 3 to 7 depending on mineral replacement (calcite or quartz); Color: Off-white, grey, tan; Luster: Dull to vitreous; Structure: Organic remains replaced by minerals.

Hardness: 3 to 7 depending on mineral replacement (calcite or quartz)
Color: Off-white, grey, tan
Luster: Dull to vitreous

Identified August 4, 2026More fossil →

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Physical properties

Hardness: 3 to 7 depending on mineral replacement (calcite or quartz); Color: Off-white, grey, tan; Luster: Dull to vitreous; Structure: Organic remains replaced by minerals.

Formation & geological history

Formed in ancient marine environments where shells and coral skeletons were buried in sediment and progressively mineralized over millions of years.

Uses & applications

Educational purposes, fossil collecting, and decorative display pieces.

Geological facts

Many fossils found in fields are heavily weathered by erosion, revealing internal structures like spiral shells or coral calices.

Field identification & locations

Commonly found in sedimentary limestone and shale deposits worldwide, often identified by distinctive symmetrical shapes, cavities, or whorls.

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Fossilized Crinoid Stem in Limestone

Crinoidea (Class) in Calcium Carbonate (CaCO3) matrix

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Fossiliferous Limestone

Limestone with embedded fossil cross-section

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