geol. |
Ludlow (MichaelBurov); the Ludlow (MichaelBurov); Ludlovian Epoch (MichaelBurov); Ludlow Age (MichaelBurov); Ludlovian Age (MichaelBurov); Ludlovian Stage (MichaelBurov); Ludlow Stage (MichaelBurov); Ludlow time (MichaelBurov); Ludlovian time (MichaelBurov) |