Type
Age
Age range
521–516 Ma
Series 2
Stage 3
Terreneuvian
Stage 2
Botoman
Atdabanian
Tommotian
Botoman
Atdabanian
Tommotian
521.2521.0520.8520.6520.4520.2520.0519.8519.6519.4519.2519.0518.8518.6518.4518.2518.0517.8517.6517.4517.2517.0516.8516.6516.4516.2516.0515.8