Type
Zone
Age range
310.8–309 Ma
Pennsylvanian
Moscovian
Neoghanthodus round-Streptognathodus cancellosus
Neoghanthodus medexultimus-Streptognathodus-concinnus
Streptognathodus dissectus
310.8310.7310.6310.5310.4310.3310.2310.1310.0309.9309.8309.7309.6309.5309.4309.3309.2309.1309.0