Type
Age
Age range
440.5–438.6 Ma
Silurian
Llandovery
Telychian
Aeronian
Rhuddanian
440.5440.4440.3440.2440.1440.0439.9439.8439.7439.6439.5439.4439.3439.2439.1439.0438.9438.8438.7438.6