Type
Zone
Age range
435.2–432.9 Ma
Wenlock
Sheinwoodian
Llandovery
Telychian
Pterospathodus pennatus procerus
Pterospathodus amorphognathoides amorphognathoides
Pterospathodus amorphognathoides lithuanicus
435.3435.2435.1435.0434.9434.8434.7434.6434.5434.4434.3434.2434.1434.0433.9433.8433.7433.6433.5433.4433.3433.2433.1433.0432.9432.8