07 Gymnophyllum wardi Mature Specimen 02 Domed top, Fused septa, Predation Damage.jpg
By Gramps
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This mature Gymnophyllum wardi corallite looks like a pie crust due to the prominent central dome, fused septal ends, and the three apparent wounds on top. Fusing of the septa served to increase the surface area of the base. This may have kept corallites from sinking in soft mud.
From the album:
Pennsylvanian Fossils of Northeast Oklahoma
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