Type
Zone
Age range
348–346.7 Ma
Mississippian
Visean
Tournaisian
Gnathodus pseudosemiglaber-Scallioganthus anchoralis
Gnathodus semiglaber-Polygnathus communis
Dollimae bouckaerti
348.0347.9347.8347.7347.6347.5347.4347.3347.2347.1347.0346.9346.8346.7