Type
Zone
Age range
408.5–407.5 Ma
Early Devonian
Emsian
Eocostapolygnathus kitabicus
Eocostapolygnathus pireneae
Gondwania kindlei
408.5408.4408.4408.4408.3408.3408.2408.1408.1408.1408.0407.9407.9407.9407.8407.8407.7407.6407.6407.6407.5