Type
Zone
Age range
429.4–428.3 Ma
Kockelella ortus obsidata
Ozarkodina bohemica longa
Ozarkodina sagitta sagitta
429.4429.4429.3429.3429.2429.1429.1429.1429.0428.9428.9428.9428.8428.8428.7428.6428.6428.6428.5428.4428.4428.4428.3