Foerstephyllum
Note highly polygonal corallites with short septal spines
Species
Foerstephyllum vacuum (Foerste, 1909)
Occurrence: Liberty, Whitewater, Otter Creek Coral Bed
Reference: Browne, 1965, Simmons and Oliver, 1967
Formerly known as Columnaria vacua, Columnaria halli
Polygonal corallites averaging 4 mm, with tabulae and short septal spines