| Here is a plate with a trilobite track of the species Cruziana furcifera from the Armorican Quartzite Formation of Portugal. | |||
Location: | Penha Garcia, Idanha-a-Nova, Distrikt Castelo Branco, Portugal | ||
| Size Plate : | about 106 x 78 mm | ||
| Age: | Lower Ordovician ,?Floium Armorican Quartzite Formation (about. 470 . Ma) | ||