Check-lists
* List of countries might not be complete
Links and literature
[1] Mikuláš R. (2000): Trace fossils from the Cambrian of the Barrandian area, Czech Geological Survey Special Papers, 12, 1-29 [as Planolites montanus Richter, 1937]
Mikuláš R. (2000): Trace fossils from the Cambrian of the Barrandian area, Czech Geological Survey Special Papers, 12, 1-29 [as Planolites montanus Richter, 1937]