Fossilized Bryozoans

Fossilized bryozoans from Arkansas. A?B. Fossilized remains of a bryozoan, Archimedes, that thrived in the Pitkin Formation of northern Arkansas about 350 million years ago. C. A lacy or fenestrate bryozoan present in Pennsylvanian-age rocks in northwestern Arkansas.

Bryozoan fossils with corresponding letters

Courtesy of the Arkansas Geological Survey

Related Entries
Diagram of bryozoan with parts labeled in black Bryozoans