This is a inexpensive example of a trilobite of the species Gravicalymene arcuata from the upper Ordovician of North Wales. | |||
Location: | Cynwyd / Corwen , N. Wales | ||
| Size trilobite: | about 15 mm long | ||
| Age: | Ordovician, LAshgill, Dolhir Beds (about. 449 Mill. Years) | ||