Type
Zone
Age range
435.8–435.5 Ma
Llandovery
Telychian
Pterospathodus amorphognathoides lithuanicus
Pterospathodus amorphognathoides lennarti
Pterospathodus amorphognathoides angulatus
435.80435.78435.76435.74435.72435.70435.68435.66435.64435.62435.60435.58435.56435.54435.52435.50