Type
Zone
Age range
314.5–312.5 Ma
Pennsylvanian
Moscovian
Streptognathodus dissectus
Neognathodus uralicus
Declinognathodus donetzianus
314.5314.4314.3314.2314.1314.0313.9313.8313.7313.6313.5313.4313.3313.2313.1313.0312.9312.8312.7312.6312.5