Rock Identifier
Fossilized Bryozoan (Phylum Bryozoa) — fossil
fossil

Fossilized Bryozoan

Phylum Bryozoa

AI-generated identification · may be incorrect

Hardness 3 on Mohs scale due to calcium carbonate composition, white to yellowish color, dull to vitreous luster, and granular or porous micro-structure.

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Physical properties

Hardness 3 on Mohs scale due to calcium carbonate composition, white to yellowish color, dull to vitreous luster, and granular or porous micro-structure.

Formation & geological history

Formed through the accumulation and fossilization of colonial aquatic invertebrate skeletons in shallow marine environments over millions of years.

Uses & applications

Used primarily in educational displays, paleontological study, and occasionally as unique natural specimens for fossil collectors.

Geological facts

Bryozoans are often called moss animals and have existed since the early Ordovician period, leaving behind abundant fossil records.

Field identification & locations

Identify by distinctive tiny circular or polygonal skeletal pores covering the surface; commonly found in limestone and marine sedimentary strata.

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Fossiliferous limestone (likely a crinoidal or shell-fragment limestone)

Bioclastic limestone, composed chiefly of calcite (CaCO₃)

sedimentary
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Porous limestone pebble

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

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Weathered fossil bone fragment (identification uncertain)

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

fossil