fossil

Fossilized Bryozoan

Bryozoa

Mohs hardness around 3 to 4, gray to bluish-gray color, dull or earthy luster, fine-grained calcareous or silicified skeletal structure, typically exhibits distinct branching or frond-like impressions.

Identified August 6, 2026More fossil →

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Physical properties

Formation & geological history

Formed in marine environments during the Paleozoic era (such as the Ordovician or Carboniferous periods) when colonial aquatic invertebrates died and were rapidly buried in sediment, later undergoing fossilization.

Uses & applications

Used primarily for educational purposes, scientific study of ancient marine ecosystems, and as a collectible specimen for fossil enthusiasts.

Geological facts

Bryozoans are often called moss animals. Although they look like plants or corals, they are actually tiny colonial animals that have existed for nearly 500 million years.

Field identification & locations

Found commonly in limestone and shales from shallow ancient sea beds. Identify by looking for delicate, lace-like or branching impressions on weathered rock surfaces.