fossil

Likely fossilized coral fragment

Rugose or tabulate coral fossil; exact taxon indeterminate

AI-generated identification · may be incorrect

Small tan, irregularly rounded specimen with prominent parallel ridges and porous texture, consistent with coral skeletal structure. Fossilized coral is commonly calcite or silica-replaced; hardness about 3 for calcitic material or 6–7 if silicified, with dull to slightly pearly luster.

Identified August 13, 2026More fossil →

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Physical properties

Formation & geological history

Formed from a colonial marine coral skeleton preserved in sediment and later mineralized during burial, commonly during the Paleozoic Era (roughly 541–252 million years ago). The visible ridges may represent corallite walls or growth bands.

Uses & applications

Primarily a collectible and educational fossil; polished silicified coral can be used in ornamental objects and jewelry, though this small fragment has little commercial utility.

Geological facts

The specimen’s apparent ribbed architecture is more diagnostic of fossil coral than ordinary rock, but the image resolution prevents species-level identification.

Field identification & locations

Look for repeating corallite chambers, radial septa, or honeycomb patterns; acid fizz indicates calcite, while no fizz and glassier hardness suggest silicification. Common sources include Paleozoic limestone deposits in the United States, Morocco, and Australia.