Type
Zone
Age range
317–315.2 Ma
Pennsylvanian
Moscovian
Bashkirian
Declinognathodus donetzianus
Neognathodus atokaensis
Declinognathodus marginodosus
317.0316.9316.8316.7316.6316.5316.4316.3316.2316.1316.0315.9315.8315.7315.6315.5315.4315.3315.2