Type
Zone
Age range
376.5–373 Ma
Late Devonian
Frasnian
Palmatolepis linguiformis
Palmatolepis rhenana
Palmatolepis hassi
376.6376.4376.2376.0375.8375.6375.4375.2375.0374.8374.6374.4374.2374.0373.8373.6373.4373.2373.0