Type
Zone
Age range
430.6–429.4 Ma
Wenlock
Homerian
Sheinwoodian
Ozarkodina bohemica longa
Ozarkodina sagitta sagitta
Kockelella ortus ortus
430.6430.6430.6430.5430.4430.4430.4430.3430.3430.2430.1430.1430.1430.0429.9429.9429.9429.8429.8429.7429.6429.6429.6429.5429.4429.4429.4